./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.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_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/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_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/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_f5774c04-f054-47f9-abba-6d8520928a2a/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 ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:39:56,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:39:56,807 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:39:56,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:39:56,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:39:56,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:39:56,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:39:56,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:39:56,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:39:56,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:39:56,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:39:56,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:39:56,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:39:56,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:39:56,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:39:56,842 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:39:56,842 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:56,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:56,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:56,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:39:56,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:39:56,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:39:56,845 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_f5774c04-f054-47f9-abba-6d8520928a2a/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 -> ce176716d91d866602a372020396224af9fcf4c5f81c6adcdcc0f1d83b0d658f [2024-11-28 02:39:57,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:39:57,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:39:57,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:39:57,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:39:57,128 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:39:57,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-28 02:40:00,270 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1703b45b7/651472e6c79d48d38b2e8bf2d25e9e9d/FLAG52bbd309d [2024-11-28 02:40:00,738 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:00,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-28 02:40:00,774 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1703b45b7/651472e6c79d48d38b2e8bf2d25e9e9d/FLAG52bbd309d [2024-11-28 02:40:00,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1703b45b7/651472e6c79d48d38b2e8bf2d25e9e9d [2024-11-28 02:40:00,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:00,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:00,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:00,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:00,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:00,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:00" (1/1) ... [2024-11-28 02:40:00,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6346533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:00, skipping insertion in model container [2024-11-28 02:40:00,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:00" (1/1) ... [2024-11-28 02:40:00,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:01,112 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_f5774c04-f054-47f9-abba-6d8520928a2a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c[914,927] [2024-11-28 02:40:01,227 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_f5774c04-f054-47f9-abba-6d8520928a2a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c[7115,7128] [2024-11-28 02:40:01,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:01,443 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:01,458 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_f5774c04-f054-47f9-abba-6d8520928a2a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c[914,927] [2024-11-28 02:40:01,496 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_f5774c04-f054-47f9-abba-6d8520928a2a/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.13.cil-1.c[7115,7128] [2024-11-28 02:40:01,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:01,595 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:01,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01 WrapperNode [2024-11-28 02:40:01,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:01,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:01,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:01,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:01,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,719 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1114 [2024-11-28 02:40:01,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:01,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:01,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:01,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:01,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,783 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 02:40:01,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,798 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:01,829 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:01,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:01,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:01,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (1/1) ... [2024-11-28 02:40:01,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:01,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:01,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:01,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:40:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 02:40:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 02:40:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-28 02:40:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-28 02:40:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-28 02:40:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-28 02:40:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-28 02:40:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-28 02:40:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-28 02:40:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-28 02:40:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-28 02:40:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-28 02:40:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-28 02:40:01,899 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-28 02:40:01,899 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-28 02:40:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-28 02:40:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-28 02:40:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-28 02:40:01,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-28 02:40:01,900 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-28 02:40:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-28 02:40:01,902 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-28 02:40:01,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-28 02:40:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-28 02:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-28 02:40:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-28 02:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-28 02:40:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-28 02:40:01,903 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-28 02:40:01,903 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-28 02:40:02,107 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:02,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:03,653 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-11-28 02:40:03,653 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:03,697 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:03,698 INFO L312 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-28 02:40:03,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:03 BoogieIcfgContainer [2024-11-28 02:40:03,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:03,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:03,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:03,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:03,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:00" (1/3) ... [2024-11-28 02:40:03,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11803c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:03, skipping insertion in model container [2024-11-28 02:40:03,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:01" (2/3) ... [2024-11-28 02:40:03,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11803c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:03, skipping insertion in model container [2024-11-28 02:40:03,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:03" (3/3) ... [2024-11-28 02:40:03,723 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.13.cil-1.c [2024-11-28 02:40:03,749 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:03,753 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.13.cil-1.c that has 16 procedures, 510 locations, 1 initial locations, 20 loop locations, and 2 error locations. [2024-11-28 02:40:03,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:03,895 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;@58a80414, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:03,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:40:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 510 states, 451 states have (on average 1.6496674057649667) internal successors, (744), 457 states have internal predecessors, (744), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-28 02:40:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:03,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:03,912 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 02:40:03,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:03,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash 802756973, now seen corresponding path program 1 times [2024-11-28 02:40:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592725921] [2024-11-28 02:40:03,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:04,540 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 02:40:04,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592725921] [2024-11-28 02:40:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592725921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:04,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115985375] [2024-11-28 02:40:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:04,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:04,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:04,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:04,594 INFO L87 Difference]: Start difference. First operand has 510 states, 451 states have (on average 1.6496674057649667) internal successors, (744), 457 states have internal predecessors, (744), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) 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 02:40:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:06,179 INFO L93 Difference]: Finished difference Result 1089 states and 1766 transitions. [2024-11-28 02:40:06,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:06,182 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 02:40:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:06,206 INFO L225 Difference]: With dead ends: 1089 [2024-11-28 02:40:06,206 INFO L226 Difference]: Without dead ends: 598 [2024-11-28 02:40:06,214 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 02:40:06,221 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 497 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:06,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1631 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:40:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-28 02:40:06,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 591. [2024-11-28 02:40:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 513 states have (on average 1.5458089668615984) internal successors, (793), 520 states have internal predecessors, (793), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2024-11-28 02:40:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 902 transitions. [2024-11-28 02:40:06,342 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 902 transitions. Word has length 62 [2024-11-28 02:40:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:06,342 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 902 transitions. [2024-11-28 02:40:06,342 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 02:40:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 902 transitions. [2024-11-28 02:40:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:06,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:06,348 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 02:40:06,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:40:06,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash 520918254, now seen corresponding path program 1 times [2024-11-28 02:40:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600406213] [2024-11-28 02:40:06,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:06,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:06,600 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 02:40:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600406213] [2024-11-28 02:40:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600406213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976207212] [2024-11-28 02:40:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:06,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:06,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:06,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:06,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:06,606 INFO L87 Difference]: Start difference. First operand 591 states and 902 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 02:40:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:06,704 INFO L93 Difference]: Finished difference Result 765 states and 1142 transitions. [2024-11-28 02:40:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:06,705 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 02:40:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:06,712 INFO L225 Difference]: With dead ends: 765 [2024-11-28 02:40:06,713 INFO L226 Difference]: Without dead ends: 596 [2024-11-28 02:40:06,715 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 02:40:06,715 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 0 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3850 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 02:40:06,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3850 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-28 02:40:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2024-11-28 02:40:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 517 states have (on average 1.539651837524178) internal successors, (796), 524 states have internal predecessors, (796), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2024-11-28 02:40:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 906 transitions. [2024-11-28 02:40:06,797 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 906 transitions. Word has length 62 [2024-11-28 02:40:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:06,798 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 906 transitions. [2024-11-28 02:40:06,798 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 02:40:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 906 transitions. [2024-11-28 02:40:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:06,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:06,801 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 02:40:06,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:40:06,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:06,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash -323087248, now seen corresponding path program 1 times [2024-11-28 02:40:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:06,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627895728] [2024-11-28 02:40:06,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:06,983 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 02:40:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:06,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627895728] [2024-11-28 02:40:06,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627895728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:06,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:06,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938513786] [2024-11-28 02:40:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:06,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:06,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:06,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:06,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:06,985 INFO L87 Difference]: Start difference. First operand 596 states and 906 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:40:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:08,041 INFO L93 Difference]: Finished difference Result 1877 states and 2687 transitions. [2024-11-28 02:40:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:40:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2024-11-28 02:40:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:08,058 INFO L225 Difference]: With dead ends: 1877 [2024-11-28 02:40:08,059 INFO L226 Difference]: Without dead ends: 1703 [2024-11-28 02:40:08,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:08,064 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 2048 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2054 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:08,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2054 Valid, 2851 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:40:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-28 02:40:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1607. [2024-11-28 02:40:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1306 states have (on average 1.4211332312404288) internal successors, (1856), 1327 states have internal predecessors, (1856), 164 states have call successors, (164), 118 states have call predecessors, (164), 135 states have return successors, (220), 164 states have call predecessors, (220), 160 states have call successors, (220) [2024-11-28 02:40:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2240 transitions. [2024-11-28 02:40:08,237 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2240 transitions. Word has length 62 [2024-11-28 02:40:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:08,239 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 2240 transitions. [2024-11-28 02:40:08,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:40:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2240 transitions. [2024-11-28 02:40:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:08,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:08,246 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 02:40:08,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:40:08,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:08,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash 595887375, now seen corresponding path program 1 times [2024-11-28 02:40:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33891608] [2024-11-28 02:40:08,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33891608] [2024-11-28 02:40:08,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33891608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:08,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:08,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:08,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613697151] [2024-11-28 02:40:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:08,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:08,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:08,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:08,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:08,384 INFO L87 Difference]: Start difference. First operand 1607 states and 2240 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 02:40:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:08,595 INFO L93 Difference]: Finished difference Result 2822 states and 3884 transitions. [2024-11-28 02:40:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:08,596 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 02:40:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:08,613 INFO L225 Difference]: With dead ends: 2822 [2024-11-28 02:40:08,613 INFO L226 Difference]: Without dead ends: 1637 [2024-11-28 02:40:08,617 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 02:40:08,618 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 0 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3850 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 02:40:08,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3850 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2024-11-28 02:40:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1637. [2024-11-28 02:40:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1330 states have (on average 1.406015037593985) internal successors, (1870), 1351 states have internal predecessors, (1870), 164 states have call successors, (164), 118 states have call predecessors, (164), 141 states have return successors, (232), 170 states have call predecessors, (232), 160 states have call successors, (232) [2024-11-28 02:40:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2266 transitions. [2024-11-28 02:40:08,825 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2266 transitions. Word has length 62 [2024-11-28 02:40:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:08,826 INFO L471 AbstractCegarLoop]: Abstraction has 1637 states and 2266 transitions. [2024-11-28 02:40:08,826 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 02:40:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2266 transitions. [2024-11-28 02:40:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:08,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:08,828 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 02:40:08,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:40:08,829 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:08,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 657926989, now seen corresponding path program 1 times [2024-11-28 02:40:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:08,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464472942] [2024-11-28 02:40:08,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:09,168 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 02:40:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464472942] [2024-11-28 02:40:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464472942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:09,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:09,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039564884] [2024-11-28 02:40:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:09,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:09,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:09,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:09,173 INFO L87 Difference]: Start difference. First operand 1637 states and 2266 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 02:40:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:11,209 INFO L93 Difference]: Finished difference Result 3684 states and 4947 transitions. [2024-11-28 02:40:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:40:11,210 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 02:40:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:11,232 INFO L225 Difference]: With dead ends: 3684 [2024-11-28 02:40:11,232 INFO L226 Difference]: Without dead ends: 2471 [2024-11-28 02:40:11,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:11,239 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 1134 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:11,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1600 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:40:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2024-11-28 02:40:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2295. [2024-11-28 02:40:11,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 1842 states have (on average 1.3724212812160694) internal successors, (2528), 1882 states have internal predecessors, (2528), 231 states have call successors, (231), 174 states have call predecessors, (231), 220 states have return successors, (364), 242 states have call predecessors, (364), 227 states have call successors, (364) [2024-11-28 02:40:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3123 transitions. [2024-11-28 02:40:11,526 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3123 transitions. Word has length 62 [2024-11-28 02:40:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:11,526 INFO L471 AbstractCegarLoop]: Abstraction has 2295 states and 3123 transitions. [2024-11-28 02:40:11,527 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 02:40:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3123 transitions. [2024-11-28 02:40:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:40:11,528 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:11,529 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 02:40:11,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:40:11,529 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:11,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1080628815, now seen corresponding path program 1 times [2024-11-28 02:40:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:11,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516534467] [2024-11-28 02:40:11,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:11,647 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 02:40:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516534467] [2024-11-28 02:40:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516534467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056664442] [2024-11-28 02:40:11,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:11,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:11,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:11,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:11,650 INFO L87 Difference]: Start difference. First operand 2295 states and 3123 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 02:40:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:12,917 INFO L93 Difference]: Finished difference Result 5956 states and 7963 transitions. [2024-11-28 02:40:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:12,918 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 02:40:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:12,942 INFO L225 Difference]: With dead ends: 5956 [2024-11-28 02:40:12,943 INFO L226 Difference]: Without dead ends: 4092 [2024-11-28 02:40:12,947 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 02:40:12,949 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 1090 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:12,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 812 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:40:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2024-11-28 02:40:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 4088. [2024-11-28 02:40:13,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3214 states have (on average 1.3192283758556316) internal successors, (4240), 3292 states have internal predecessors, (4240), 433 states have call successors, (433), 340 states have call predecessors, (433), 439 states have return successors, (760), 462 states have call predecessors, (760), 429 states have call successors, (760) [2024-11-28 02:40:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5433 transitions. [2024-11-28 02:40:13,298 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5433 transitions. Word has length 62 [2024-11-28 02:40:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:13,298 INFO L471 AbstractCegarLoop]: Abstraction has 4088 states and 5433 transitions. [2024-11-28 02:40:13,299 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 02:40:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5433 transitions. [2024-11-28 02:40:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:40:13,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:13,301 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 02:40:13,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:40:13,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:13,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1953172576, now seen corresponding path program 1 times [2024-11-28 02:40:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:13,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117904813] [2024-11-28 02:40:13,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:13,385 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 02:40:13,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117904813] [2024-11-28 02:40:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117904813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209370541] [2024-11-28 02:40:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:13,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:13,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:13,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:13,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:13,387 INFO L87 Difference]: Start difference. First operand 4088 states and 5433 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 02:40:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:13,858 INFO L93 Difference]: Finished difference Result 10129 states and 13413 transitions. [2024-11-28 02:40:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:13,858 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 02:40:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:13,901 INFO L225 Difference]: With dead ends: 10129 [2024-11-28 02:40:13,902 INFO L226 Difference]: Without dead ends: 6451 [2024-11-28 02:40:13,913 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 02:40:13,913 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 102 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:13,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1524 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2024-11-28 02:40:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6301. [2024-11-28 02:40:14,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6301 states, 4879 states have (on average 1.3002664480426316) internal successors, (6344), 4980 states have internal predecessors, (6344), 698 states have call successors, (698), 572 states have call predecessors, (698), 722 states have return successors, (1228), 755 states have call predecessors, (1228), 694 states have call successors, (1228) [2024-11-28 02:40:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6301 states to 6301 states and 8270 transitions. [2024-11-28 02:40:14,583 INFO L78 Accepts]: Start accepts. Automaton has 6301 states and 8270 transitions. Word has length 63 [2024-11-28 02:40:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:14,583 INFO L471 AbstractCegarLoop]: Abstraction has 6301 states and 8270 transitions. [2024-11-28 02:40:14,584 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 02:40:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 6301 states and 8270 transitions. [2024-11-28 02:40:14,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:40:14,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:14,589 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:14,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:40:14,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:14,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -186402185, now seen corresponding path program 1 times [2024-11-28 02:40:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572244362] [2024-11-28 02:40:14,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:14,730 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 02:40:14,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:14,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572244362] [2024-11-28 02:40:14,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572244362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:14,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:14,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798977193] [2024-11-28 02:40:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:14,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:14,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:14,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:14,732 INFO L87 Difference]: Start difference. First operand 6301 states and 8270 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 02:40:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:15,660 INFO L93 Difference]: Finished difference Result 7431 states and 9673 transitions. [2024-11-28 02:40:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:15,661 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 02:40:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:15,711 INFO L225 Difference]: With dead ends: 7431 [2024-11-28 02:40:15,714 INFO L226 Difference]: Without dead ends: 7428 [2024-11-28 02:40:15,718 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 02:40:15,719 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 1447 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:15,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 870 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:40:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2024-11-28 02:40:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7329. [2024-11-28 02:40:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 5650 states have (on average 1.2899115044247789) internal successors, (7288), 5766 states have internal predecessors, (7288), 824 states have call successors, (824), 686 states have call predecessors, (824), 853 states have return successors, (1433), 883 states have call predecessors, (1433), 821 states have call successors, (1433) [2024-11-28 02:40:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 9545 transitions. [2024-11-28 02:40:16,716 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 9545 transitions. Word has length 68 [2024-11-28 02:40:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:16,718 INFO L471 AbstractCegarLoop]: Abstraction has 7329 states and 9545 transitions. [2024-11-28 02:40:16,718 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 02:40:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 9545 transitions. [2024-11-28 02:40:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:40:16,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:16,725 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 02:40:16,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:40:16,725 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:16,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1485018081, now seen corresponding path program 1 times [2024-11-28 02:40:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:16,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609446141] [2024-11-28 02:40:16,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:17,003 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 02:40:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609446141] [2024-11-28 02:40:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609446141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577844566] [2024-11-28 02:40:17,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:17,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:17,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:17,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:17,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:40:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:17,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:40:17,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:17,713 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 02:40:17,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:40:17,890 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 02:40:17,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577844566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:40:17,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:40:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-28 02:40:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801999752] [2024-11-28 02:40:17,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:40:17,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:40:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:17,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:40:17,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:40:17,896 INFO L87 Difference]: Start difference. First operand 7329 states and 9545 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 02:40:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:19,823 INFO L93 Difference]: Finished difference Result 15269 states and 19642 transitions. [2024-11-28 02:40:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:19,824 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 02:40:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:19,927 INFO L225 Difference]: With dead ends: 15269 [2024-11-28 02:40:19,928 INFO L226 Difference]: Without dead ends: 15266 [2024-11-28 02:40:19,937 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 02:40:19,938 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 1217 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:19,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2740 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:40:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15266 states. [2024-11-28 02:40:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15266 to 13940. [2024-11-28 02:40:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13940 states, 10713 states have (on average 1.278540091477644) internal successors, (13697), 10933 states have internal predecessors, (13697), 1556 states have call successors, (1556), 1320 states have call predecessors, (1556), 1669 states have return successors, (2748), 1693 states have call predecessors, (2748), 1553 states have call successors, (2748) [2024-11-28 02:40:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 18001 transitions. [2024-11-28 02:40:22,016 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 18001 transitions. Word has length 69 [2024-11-28 02:40:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:22,018 INFO L471 AbstractCegarLoop]: Abstraction has 13940 states and 18001 transitions. [2024-11-28 02:40:22,019 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 02:40:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 18001 transitions. [2024-11-28 02:40:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:40:22,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:22,025 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 02:40:22,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:22,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:40:22,227 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:22,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1059992125, now seen corresponding path program 2 times [2024-11-28 02:40:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823642550] [2024-11-28 02:40:22,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:40:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:22,265 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:40:22,266 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:22,315 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 02:40:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823642550] [2024-11-28 02:40:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823642550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:22,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970007482] [2024-11-28 02:40:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:22,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:22,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:22,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:22,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:22,318 INFO L87 Difference]: Start difference. First operand 13940 states and 18001 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 02:40:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:23,314 INFO L93 Difference]: Finished difference Result 20730 states and 26818 transitions. [2024-11-28 02:40:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:23,314 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 02:40:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:23,367 INFO L225 Difference]: With dead ends: 20730 [2024-11-28 02:40:23,367 INFO L226 Difference]: Without dead ends: 8058 [2024-11-28 02:40:23,404 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 02:40:23,408 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 743 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 960 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 02:40:23,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 960 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8058 states. [2024-11-28 02:40:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8058 to 7960. [2024-11-28 02:40:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 6150 states have (on average 1.2608130081300812) internal successors, (7754), 6268 states have internal predecessors, (7754), 890 states have call successors, (890), 742 states have call predecessors, (890), 918 states have return successors, (1462), 956 states have call predecessors, (1462), 887 states have call successors, (1462) [2024-11-28 02:40:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 10106 transitions. [2024-11-28 02:40:24,296 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 10106 transitions. Word has length 71 [2024-11-28 02:40:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:24,297 INFO L471 AbstractCegarLoop]: Abstraction has 7960 states and 10106 transitions. [2024-11-28 02:40:24,297 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 02:40:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 10106 transitions. [2024-11-28 02:40:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:40:24,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:24,302 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 02:40:24,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:40:24,302 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:24,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1363119835, now seen corresponding path program 1 times [2024-11-28 02:40:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:24,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585998898] [2024-11-28 02:40:24,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:24,565 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 02:40:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585998898] [2024-11-28 02:40:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585998898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264925071] [2024-11-28 02:40:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:24,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:24,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:24,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:24,568 INFO L87 Difference]: Start difference. First operand 7960 states and 10106 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 02:40:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:27,396 INFO L93 Difference]: Finished difference Result 23106 states and 29195 transitions. [2024-11-28 02:40:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:40:27,397 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 02:40:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:27,480 INFO L225 Difference]: With dead ends: 23106 [2024-11-28 02:40:27,480 INFO L226 Difference]: Without dead ends: 15584 [2024-11-28 02:40:27,504 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 02:40:27,505 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 785 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:27,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 2124 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:40:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15584 states. [2024-11-28 02:40:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15584 to 14937. [2024-11-28 02:40:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14937 states, 11400 states have (on average 1.2256140350877194) internal successors, (13972), 11658 states have internal predecessors, (13972), 1713 states have call successors, (1713), 1442 states have call predecessors, (1713), 1822 states have return successors, (3045), 1849 states have call predecessors, (3045), 1710 states have call successors, (3045) [2024-11-28 02:40:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14937 states to 14937 states and 18730 transitions. [2024-11-28 02:40:29,589 INFO L78 Accepts]: Start accepts. Automaton has 14937 states and 18730 transitions. Word has length 80 [2024-11-28 02:40:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:29,590 INFO L471 AbstractCegarLoop]: Abstraction has 14937 states and 18730 transitions. [2024-11-28 02:40:29,590 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 02:40:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 14937 states and 18730 transitions. [2024-11-28 02:40:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:40:29,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:29,600 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 02:40:29,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:40:29,601 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:29,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:29,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1498353797, now seen corresponding path program 1 times [2024-11-28 02:40:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:29,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439950889] [2024-11-28 02:40:29,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:29,837 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 02:40:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439950889] [2024-11-28 02:40:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439950889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:40:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704022540] [2024-11-28 02:40:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:29,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:40:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:29,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:40:29,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:40:29,839 INFO L87 Difference]: Start difference. First operand 14937 states and 18730 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 02:40:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:33,015 INFO L93 Difference]: Finished difference Result 26639 states and 33225 transitions. [2024-11-28 02:40:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:40:33,016 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 02:40:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:33,077 INFO L225 Difference]: With dead ends: 26639 [2024-11-28 02:40:33,077 INFO L226 Difference]: Without dead ends: 12757 [2024-11-28 02:40:33,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:40:33,105 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 1736 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:33,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 2183 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:40:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12757 states. [2024-11-28 02:40:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12757 to 11941. [2024-11-28 02:40:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11941 states, 9189 states have (on average 1.216454456415279) internal successors, (11178), 9356 states have internal predecessors, (11178), 1340 states have call successors, (1340), 1123 states have call predecessors, (1340), 1410 states have return successors, (2144), 1471 states have call predecessors, (2144), 1337 states have call successors, (2144) [2024-11-28 02:40:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11941 states to 11941 states and 14662 transitions. [2024-11-28 02:40:34,275 INFO L78 Accepts]: Start accepts. Automaton has 11941 states and 14662 transitions. Word has length 86 [2024-11-28 02:40:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:34,275 INFO L471 AbstractCegarLoop]: Abstraction has 11941 states and 14662 transitions. [2024-11-28 02:40:34,276 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 02:40:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 11941 states and 14662 transitions. [2024-11-28 02:40:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 02:40:34,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:34,290 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 02:40:34,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:40:34,290 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:34,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1326725756, now seen corresponding path program 1 times [2024-11-28 02:40:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799101669] [2024-11-28 02:40:34,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:34,499 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 02:40:34,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799101669] [2024-11-28 02:40:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799101669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616068741] [2024-11-28 02:40:34,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:34,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:34,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:34,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:34,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:40:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:34,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:40:34,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:34,769 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 02:40:34,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:34,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616068741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:34,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:40:34,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-28 02:40:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270974194] [2024-11-28 02:40:34,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:34,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:34,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:34,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:40:34,775 INFO L87 Difference]: Start difference. First operand 11941 states and 14662 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 02:40:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:35,253 INFO L93 Difference]: Finished difference Result 17119 states and 20904 transitions. [2024-11-28 02:40:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:35,254 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 02:40:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:35,291 INFO L225 Difference]: With dead ends: 17119 [2024-11-28 02:40:35,292 INFO L226 Difference]: Without dead ends: 5626 [2024-11-28 02:40:35,315 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 02:40:35,316 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 0 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3836 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 02:40:35,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3836 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5626 states. [2024-11-28 02:40:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5626 to 5436. [2024-11-28 02:40:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5436 states, 4290 states have (on average 1.2202797202797202) internal successors, (5235), 4346 states have internal predecessors, (5235), 556 states have call successors, (556), 446 states have call predecessors, (556), 588 states have return successors, (869), 644 states have call predecessors, (869), 553 states have call successors, (869) [2024-11-28 02:40:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 6660 transitions. [2024-11-28 02:40:35,768 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 6660 transitions. Word has length 139 [2024-11-28 02:40:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:35,768 INFO L471 AbstractCegarLoop]: Abstraction has 5436 states and 6660 transitions. [2024-11-28 02:40:35,768 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 02:40:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 6660 transitions. [2024-11-28 02:40:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:40:35,777 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:35,777 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 02:40:35,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:40:35,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:40:35,979 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:35,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 467302960, now seen corresponding path program 1 times [2024-11-28 02:40:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122117059] [2024-11-28 02:40:35,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:36,043 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 02:40:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122117059] [2024-11-28 02:40:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122117059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666031889] [2024-11-28 02:40:36,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:36,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:36,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:36,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:36,047 INFO L87 Difference]: Start difference. First operand 5436 states and 6660 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 02:40:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:36,475 INFO L93 Difference]: Finished difference Result 5751 states and 7030 transitions. [2024-11-28 02:40:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:36,476 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 02:40:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:36,503 INFO L225 Difference]: With dead ends: 5751 [2024-11-28 02:40:36,503 INFO L226 Difference]: Without dead ends: 4997 [2024-11-28 02:40:36,506 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 02:40:36,507 INFO L435 NwaCegarLoop]: 770 mSDtfsCounter, 120 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1416 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 02:40:36,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1416 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2024-11-28 02:40:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4997. [2024-11-28 02:40:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 3957 states have (on average 1.2251705837755875) internal successors, (4848), 4008 states have internal predecessors, (4848), 506 states have call successors, (506), 402 states have call predecessors, (506), 532 states have return successors, (799), 587 states have call predecessors, (799), 503 states have call successors, (799) [2024-11-28 02:40:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 6153 transitions. [2024-11-28 02:40:36,972 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 6153 transitions. Word has length 141 [2024-11-28 02:40:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:36,972 INFO L471 AbstractCegarLoop]: Abstraction has 4997 states and 6153 transitions. [2024-11-28 02:40:36,972 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 02:40:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 6153 transitions. [2024-11-28 02:40:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:40:36,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:36,983 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 02:40:36,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:40:36,983 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:36,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1438775441, now seen corresponding path program 1 times [2024-11-28 02:40:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:36,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043215971] [2024-11-28 02:40:36,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:36,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:37,117 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 02:40:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043215971] [2024-11-28 02:40:37,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043215971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:37,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:37,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:37,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124713243] [2024-11-28 02:40:37,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:37,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:37,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:37,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:37,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:37,120 INFO L87 Difference]: Start difference. First operand 4997 states and 6153 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 02:40:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:38,499 INFO L93 Difference]: Finished difference Result 9089 states and 11095 transitions. [2024-11-28 02:40:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:38,500 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 02:40:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:38,529 INFO L225 Difference]: With dead ends: 9089 [2024-11-28 02:40:38,529 INFO L226 Difference]: Without dead ends: 4947 [2024-11-28 02:40:38,538 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 02:40:38,538 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 382 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:38,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1587 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:40:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2024-11-28 02:40:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4700. [2024-11-28 02:40:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4700 states, 3734 states have (on average 1.2289769683985003) internal successors, (4589), 3787 states have internal predecessors, (4589), 472 states have call successors, (472), 376 states have call predecessors, (472), 492 states have return successors, (730), 537 states have call predecessors, (730), 469 states have call successors, (730) [2024-11-28 02:40:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 5791 transitions. [2024-11-28 02:40:38,932 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 5791 transitions. Word has length 150 [2024-11-28 02:40:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:38,933 INFO L471 AbstractCegarLoop]: Abstraction has 4700 states and 5791 transitions. [2024-11-28 02:40:38,933 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 02:40:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 5791 transitions. [2024-11-28 02:40:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 02:40:38,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:38,939 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 02:40:38,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:40:38,940 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:38,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1984607410, now seen corresponding path program 1 times [2024-11-28 02:40:38,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:38,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681002930] [2024-11-28 02:40:38,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:38,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 02:40:39,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681002930] [2024-11-28 02:40:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681002930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339133019] [2024-11-28 02:40:39,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:39,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:39,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:39,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:40:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:39,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:40:39,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 02:40:39,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339133019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:40:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-28 02:40:39,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106849538] [2024-11-28 02:40:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:39,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:39,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:39,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:39,695 INFO L87 Difference]: Start difference. First operand 4700 states and 5791 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:40:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:41,057 INFO L93 Difference]: Finished difference Result 12379 states and 15310 transitions. [2024-11-28 02:40:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 153 [2024-11-28 02:40:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:41,109 INFO L225 Difference]: With dead ends: 12379 [2024-11-28 02:40:41,109 INFO L226 Difference]: Without dead ends: 8003 [2024-11-28 02:40:41,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:41,124 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 397 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:41,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1184 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:40:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2024-11-28 02:40:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 7887. [2024-11-28 02:40:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7887 states, 6231 states have (on average 1.1930669234472797) internal successors, (7434), 6329 states have internal predecessors, (7434), 804 states have call successors, (804), 637 states have call predecessors, (804), 850 states have return successors, (1329), 921 states have call predecessors, (1329), 801 states have call successors, (1329) [2024-11-28 02:40:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7887 states to 7887 states and 9567 transitions. [2024-11-28 02:40:41,899 INFO L78 Accepts]: Start accepts. Automaton has 7887 states and 9567 transitions. Word has length 153 [2024-11-28 02:40:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:41,900 INFO L471 AbstractCegarLoop]: Abstraction has 7887 states and 9567 transitions. [2024-11-28 02:40:41,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:40:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7887 states and 9567 transitions. [2024-11-28 02:40:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:40:41,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:41,960 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:41,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:42,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:40:42,165 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:42,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1035650644, now seen corresponding path program 1 times [2024-11-28 02:40:42,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:42,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027623023] [2024-11-28 02:40:42,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:42,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:40:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027623023] [2024-11-28 02:40:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027623023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227141110] [2024-11-28 02:40:42,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:42,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:42,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:42,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:40:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:42,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:40:42,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:40:42,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:42,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227141110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:42,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:40:42,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 02:40:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023270830] [2024-11-28 02:40:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:42,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:42,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:42,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:40:42,601 INFO L87 Difference]: Start difference. First operand 7887 states and 9567 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:40:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:43,842 INFO L93 Difference]: Finished difference Result 11131 states and 13359 transitions. [2024-11-28 02:40:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:43,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 169 [2024-11-28 02:40:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:43,861 INFO L225 Difference]: With dead ends: 11131 [2024-11-28 02:40:43,862 INFO L226 Difference]: Without dead ends: 3277 [2024-11-28 02:40:43,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:43,874 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 1054 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:43,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1143 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:40:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2024-11-28 02:40:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2877. [2024-11-28 02:40:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2335 states have (on average 1.2214132762312633) internal successors, (2852), 2362 states have internal predecessors, (2852), 271 states have call successors, (271), 202 states have call predecessors, (271), 269 states have return successors, (383), 313 states have call predecessors, (383), 268 states have call successors, (383) [2024-11-28 02:40:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3506 transitions. [2024-11-28 02:40:44,172 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3506 transitions. Word has length 169 [2024-11-28 02:40:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:44,173 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 3506 transitions. [2024-11-28 02:40:44,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:40:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3506 transitions. [2024-11-28 02:40:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:44,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:44,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:44,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:40:44,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5774c04-f054-47f9-abba-6d8520928a2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:40:44,380 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:44,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash -216865826, now seen corresponding path program 1 times [2024-11-28 02:40:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365739866] [2024-11-28 02:40:44,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:44,470 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 02:40:44,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:44,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365739866] [2024-11-28 02:40:44,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365739866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:44,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:44,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:44,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619253798] [2024-11-28 02:40:44,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:44,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:44,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:44,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:44,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:44,472 INFO L87 Difference]: Start difference. First operand 2877 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:40:44,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:44,721 INFO L93 Difference]: Finished difference Result 3274 states and 4136 transitions. [2024-11-28 02:40:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:44,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:44,744 INFO L225 Difference]: With dead ends: 3274 [2024-11-28 02:40:44,744 INFO L226 Difference]: Without dead ends: 2877 [2024-11-28 02:40:44,747 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 02:40:44,748 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 636 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 894 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 02:40:44,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 894 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-28 02:40:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2024-11-28 02:40:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2335 states have (on average 1.220985010706638) internal successors, (2851), 2362 states have internal predecessors, (2851), 271 states have call successors, (271), 202 states have call predecessors, (271), 269 states have return successors, (383), 313 states have call predecessors, (383), 268 states have call successors, (383) [2024-11-28 02:40:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3505 transitions. [2024-11-28 02:40:45,047 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3505 transitions. Word has length 188 [2024-11-28 02:40:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:45,048 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 3505 transitions. [2024-11-28 02:40:45,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:40:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3505 transitions. [2024-11-28 02:40:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:45,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:45,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:45,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:40:45,053 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:45,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -822640608, now seen corresponding path program 1 times [2024-11-28 02:40:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:45,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376287242] [2024-11-28 02:40:45,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:45,146 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 02:40:45,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:45,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376287242] [2024-11-28 02:40:45,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376287242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:45,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:45,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:45,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172124091] [2024-11-28 02:40:45,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:45,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:45,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:45,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:45,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:45,152 INFO L87 Difference]: Start difference. First operand 2877 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:40:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:45,428 INFO L93 Difference]: Finished difference Result 3266 states and 4119 transitions. [2024-11-28 02:40:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:45,448 INFO L225 Difference]: With dead ends: 3266 [2024-11-28 02:40:45,449 INFO L226 Difference]: Without dead ends: 2877 [2024-11-28 02:40:45,451 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 02:40:45,451 INFO L435 NwaCegarLoop]: 768 mSDtfsCounter, 627 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 893 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 02:40:45,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 893 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-28 02:40:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2024-11-28 02:40:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2335 states have (on average 1.220556745182013) internal successors, (2850), 2362 states have internal predecessors, (2850), 271 states have call successors, (271), 202 states have call predecessors, (271), 269 states have return successors, (383), 313 states have call predecessors, (383), 268 states have call successors, (383) [2024-11-28 02:40:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3504 transitions. [2024-11-28 02:40:45,746 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3504 transitions. Word has length 188 [2024-11-28 02:40:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:45,747 INFO L471 AbstractCegarLoop]: Abstraction has 2877 states and 3504 transitions. [2024-11-28 02:40:45,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 02:40:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3504 transitions. [2024-11-28 02:40:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:45,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:45,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:45,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:40:45,753 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:45,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -132809118, now seen corresponding path program 1 times [2024-11-28 02:40:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720807241] [2024-11-28 02:40:45,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:45,915 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 02:40:45,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:45,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720807241] [2024-11-28 02:40:45,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720807241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:45,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:45,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616482916] [2024-11-28 02:40:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:45,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:45,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:45,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:45,919 INFO L87 Difference]: Start difference. First operand 2877 states and 3504 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 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 02:40:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:47,171 INFO L93 Difference]: Finished difference Result 3701 states and 4828 transitions. [2024-11-28 02:40:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:47,198 INFO L225 Difference]: With dead ends: 3701 [2024-11-28 02:40:47,198 INFO L226 Difference]: Without dead ends: 3315 [2024-11-28 02:40:47,201 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 02:40:47,203 INFO L435 NwaCegarLoop]: 616 mSDtfsCounter, 1408 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:47,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 2107 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:40:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2024-11-28 02:40:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3282. [2024-11-28 02:40:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2711 states have (on average 1.2744374769457765) internal successors, (3455), 2739 states have internal predecessors, (3455), 293 states have call successors, (293), 208 states have call predecessors, (293), 276 states have return successors, (406), 335 states have call predecessors, (406), 290 states have call successors, (406) [2024-11-28 02:40:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4154 transitions. [2024-11-28 02:40:47,592 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4154 transitions. Word has length 188 [2024-11-28 02:40:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:47,593 INFO L471 AbstractCegarLoop]: Abstraction has 3282 states and 4154 transitions. [2024-11-28 02:40:47,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 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 02:40:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4154 transitions. [2024-11-28 02:40:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:47,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:47,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:47,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:40:47,602 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:47,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1857417440, now seen corresponding path program 1 times [2024-11-28 02:40:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:47,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135992818] [2024-11-28 02:40:47,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:47,857 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 02:40:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135992818] [2024-11-28 02:40:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135992818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:47,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:47,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:47,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136638980] [2024-11-28 02:40:47,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:47,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:47,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:47,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:47,859 INFO L87 Difference]: Start difference. First operand 3282 states and 4154 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:49,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:49,858 INFO L93 Difference]: Finished difference Result 4594 states and 6285 transitions. [2024-11-28 02:40:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:40:49,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:49,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:49,882 INFO L225 Difference]: With dead ends: 4594 [2024-11-28 02:40:49,883 INFO L226 Difference]: Without dead ends: 3803 [2024-11-28 02:40:49,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:40:49,888 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 1419 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:49,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 3669 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:40:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2024-11-28 02:40:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3658. [2024-11-28 02:40:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3058 states have (on average 1.3086984957488554) internal successors, (4002), 3087 states have internal predecessors, (4002), 315 states have call successors, (315), 214 states have call predecessors, (315), 283 states have return successors, (431), 358 states have call predecessors, (431), 312 states have call successors, (431) [2024-11-28 02:40:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 4748 transitions. [2024-11-28 02:40:50,317 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 4748 transitions. Word has length 188 [2024-11-28 02:40:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:50,318 INFO L471 AbstractCegarLoop]: Abstraction has 3658 states and 4748 transitions. [2024-11-28 02:40:50,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 4748 transitions. [2024-11-28 02:40:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:50,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:50,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:50,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:40:50,323 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:50,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1358860638, now seen corresponding path program 1 times [2024-11-28 02:40:50,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932918066] [2024-11-28 02:40:50,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:50,539 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 02:40:50,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932918066] [2024-11-28 02:40:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932918066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:50,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:50,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297802993] [2024-11-28 02:40:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:50,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:50,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:50,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:50,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:50,543 INFO L87 Difference]: Start difference. First operand 3658 states and 4748 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:52,235 INFO L93 Difference]: Finished difference Result 5798 states and 8218 transitions. [2024-11-28 02:40:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:40:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:52,261 INFO L225 Difference]: With dead ends: 5798 [2024-11-28 02:40:52,261 INFO L226 Difference]: Without dead ends: 4631 [2024-11-28 02:40:52,265 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 02:40:52,266 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 1414 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:52,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 3653 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:40:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2024-11-28 02:40:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4463. [2024-11-28 02:40:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3803 states have (on average 1.3660268209308442) internal successors, (5195), 3836 states have internal predecessors, (5195), 359 states have call successors, (359), 226 states have call predecessors, (359), 299 states have return successors, (487), 404 states have call predecessors, (487), 356 states have call successors, (487) [2024-11-28 02:40:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6041 transitions. [2024-11-28 02:40:52,780 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6041 transitions. Word has length 188 [2024-11-28 02:40:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:52,781 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 6041 transitions. [2024-11-28 02:40:52,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6041 transitions. [2024-11-28 02:40:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:52,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:52,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:52,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:40:52,786 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:52,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash -788588832, now seen corresponding path program 1 times [2024-11-28 02:40:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:52,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197746227] [2024-11-28 02:40:52,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:52,942 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 02:40:52,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197746227] [2024-11-28 02:40:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197746227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:52,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:52,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293030174] [2024-11-28 02:40:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:52,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:52,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:52,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:52,944 INFO L87 Difference]: Start difference. First operand 4463 states and 6041 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:53,989 INFO L93 Difference]: Finished difference Result 6721 states and 9754 transitions. [2024-11-28 02:40:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:54,010 INFO L225 Difference]: With dead ends: 6721 [2024-11-28 02:40:54,010 INFO L226 Difference]: Without dead ends: 4749 [2024-11-28 02:40:54,015 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 02:40:54,016 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 1041 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:54,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1447 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:40:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2024-11-28 02:40:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 4463. [2024-11-28 02:40:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3803 states have (on average 1.36471206941888) internal successors, (5190), 3836 states have internal predecessors, (5190), 359 states have call successors, (359), 226 states have call predecessors, (359), 299 states have return successors, (487), 404 states have call predecessors, (487), 356 states have call successors, (487) [2024-11-28 02:40:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6036 transitions. [2024-11-28 02:40:54,467 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6036 transitions. Word has length 188 [2024-11-28 02:40:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:54,468 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 6036 transitions. [2024-11-28 02:40:54,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6036 transitions. [2024-11-28 02:40:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:54,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:54,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:54,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:40:54,475 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:54,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash 615280354, now seen corresponding path program 1 times [2024-11-28 02:40:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:54,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142393030] [2024-11-28 02:40:54,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:54,643 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 02:40:54,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:54,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142393030] [2024-11-28 02:40:54,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142393030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:54,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903152268] [2024-11-28 02:40:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:54,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:54,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:54,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:54,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:54,646 INFO L87 Difference]: Start difference. First operand 4463 states and 6036 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:55,789 INFO L93 Difference]: Finished difference Result 6710 states and 9722 transitions. [2024-11-28 02:40:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:55,812 INFO L225 Difference]: With dead ends: 6710 [2024-11-28 02:40:55,812 INFO L226 Difference]: Without dead ends: 4738 [2024-11-28 02:40:55,817 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 02:40:55,818 INFO L435 NwaCegarLoop]: 543 mSDtfsCounter, 1038 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:55,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1439 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:40:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2024-11-28 02:40:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4463. [2024-11-28 02:40:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3803 states have (on average 1.3633973179069157) internal successors, (5185), 3836 states have internal predecessors, (5185), 359 states have call successors, (359), 226 states have call predecessors, (359), 299 states have return successors, (487), 404 states have call predecessors, (487), 356 states have call successors, (487) [2024-11-28 02:40:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6031 transitions. [2024-11-28 02:40:56,351 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6031 transitions. Word has length 188 [2024-11-28 02:40:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:56,351 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 6031 transitions. [2024-11-28 02:40:56,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6031 transitions. [2024-11-28 02:40:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:56,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:56,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:56,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:40:56,356 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:56,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -170717536, now seen corresponding path program 1 times [2024-11-28 02:40:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605551307] [2024-11-28 02:40:56,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:56,518 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 02:40:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:56,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605551307] [2024-11-28 02:40:56,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605551307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:56,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:56,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:56,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689097987] [2024-11-28 02:40:56,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:56,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:56,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:56,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:56,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:56,521 INFO L87 Difference]: Start difference. First operand 4463 states and 6031 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:57,560 INFO L93 Difference]: Finished difference Result 6688 states and 9668 transitions. [2024-11-28 02:40:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:57,581 INFO L225 Difference]: With dead ends: 6688 [2024-11-28 02:40:57,582 INFO L226 Difference]: Without dead ends: 4716 [2024-11-28 02:40:57,586 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 02:40:57,587 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 1034 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:57,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1425 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:40:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2024-11-28 02:40:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 4463. [2024-11-28 02:40:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3803 states have (on average 1.3620825663949514) internal successors, (5180), 3836 states have internal predecessors, (5180), 359 states have call successors, (359), 226 states have call predecessors, (359), 299 states have return successors, (487), 404 states have call predecessors, (487), 356 states have call successors, (487) [2024-11-28 02:40:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6026 transitions. [2024-11-28 02:40:58,121 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6026 transitions. Word has length 188 [2024-11-28 02:40:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:58,122 INFO L471 AbstractCegarLoop]: Abstraction has 4463 states and 6026 transitions. [2024-11-28 02:40:58,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6026 transitions. [2024-11-28 02:40:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:40:58,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:58,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:58,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:40:58,126 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:58,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1929020894, now seen corresponding path program 1 times [2024-11-28 02:40:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:58,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234108215] [2024-11-28 02:40:58,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:58,278 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 02:40:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234108215] [2024-11-28 02:40:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234108215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901328254] [2024-11-28 02:40:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:58,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:58,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:58,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:58,281 INFO L87 Difference]: Start difference. First operand 4463 states and 6026 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:40:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:59,864 INFO L93 Difference]: Finished difference Result 8349 states and 12328 transitions. [2024-11-28 02:40:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:40:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:40:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:59,888 INFO L225 Difference]: With dead ends: 8349 [2024-11-28 02:40:59,888 INFO L226 Difference]: Without dead ends: 6377 [2024-11-28 02:40:59,894 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 02:40:59,895 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 1382 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:59,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 3570 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:40:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2024-11-28 02:41:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6190. [2024-11-28 02:41:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6190 states, 5404 states have (on average 1.4374537379718726) internal successors, (7768), 5451 states have internal predecessors, (7768), 447 states have call successors, (447), 250 states have call predecessors, (447), 337 states have return successors, (623), 496 states have call predecessors, (623), 444 states have call successors, (623) [2024-11-28 02:41:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 8838 transitions. [2024-11-28 02:41:00,627 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 8838 transitions. Word has length 188 [2024-11-28 02:41:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:00,628 INFO L471 AbstractCegarLoop]: Abstraction has 6190 states and 8838 transitions. [2024-11-28 02:41:00,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:00,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 8838 transitions. [2024-11-28 02:41:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:00,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:00,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:00,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:41:00,635 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:00,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2021118240, now seen corresponding path program 1 times [2024-11-28 02:41:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60168660] [2024-11-28 02:41:00,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:00,817 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 02:41:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60168660] [2024-11-28 02:41:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60168660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575693162] [2024-11-28 02:41:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:00,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:00,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:00,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:00,820 INFO L87 Difference]: Start difference. First operand 6190 states and 8838 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:01,906 INFO L93 Difference]: Finished difference Result 10498 states and 15996 transitions. [2024-11-28 02:41:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:01,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:01,931 INFO L225 Difference]: With dead ends: 10498 [2024-11-28 02:41:01,931 INFO L226 Difference]: Without dead ends: 6799 [2024-11-28 02:41:01,941 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 02:41:01,941 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 1069 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:01,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1329 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:41:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6799 states. [2024-11-28 02:41:02,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6799 to 6190. [2024-11-28 02:41:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6190 states, 5404 states have (on average 1.4357883049592894) internal successors, (7759), 5451 states have internal predecessors, (7759), 447 states have call successors, (447), 250 states have call predecessors, (447), 337 states have return successors, (623), 496 states have call predecessors, (623), 444 states have call successors, (623) [2024-11-28 02:41:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6190 states to 6190 states and 8829 transitions. [2024-11-28 02:41:02,506 INFO L78 Accepts]: Start accepts. Automaton has 6190 states and 8829 transitions. Word has length 188 [2024-11-28 02:41:02,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:02,506 INFO L471 AbstractCegarLoop]: Abstraction has 6190 states and 8829 transitions. [2024-11-28 02:41:02,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:02,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6190 states and 8829 transitions. [2024-11-28 02:41:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:02,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:02,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:02,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:41:02,509 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:02,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1040163426, now seen corresponding path program 1 times [2024-11-28 02:41:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182039589] [2024-11-28 02:41:02,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182039589] [2024-11-28 02:41:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182039589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:41:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76752312] [2024-11-28 02:41:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:02,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:02,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:02,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:02,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:41:02,671 INFO L87 Difference]: Start difference. First operand 6190 states and 8829 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:04,590 INFO L93 Difference]: Finished difference Result 13938 states and 21591 transitions. [2024-11-28 02:41:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:41:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:04,623 INFO L225 Difference]: With dead ends: 13938 [2024-11-28 02:41:04,624 INFO L226 Difference]: Without dead ends: 10239 [2024-11-28 02:41:04,635 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 02:41:04,635 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 1369 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:04,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 3539 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:41:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2024-11-28 02:41:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 9986. [2024-11-28 02:41:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 8930 states have (on average 1.5176931690929452) internal successors, (13553), 9023 states have internal predecessors, (13553), 623 states have call successors, (623), 298 states have call predecessors, (623), 431 states have return successors, (991), 680 states have call predecessors, (991), 620 states have call successors, (991) [2024-11-28 02:41:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 15167 transitions. [2024-11-28 02:41:05,504 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 15167 transitions. Word has length 188 [2024-11-28 02:41:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:05,505 INFO L471 AbstractCegarLoop]: Abstraction has 9986 states and 15167 transitions. [2024-11-28 02:41:05,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 15167 transitions. [2024-11-28 02:41:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:05,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:05,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:05,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:41:05,508 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:05,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1485332256, now seen corresponding path program 1 times [2024-11-28 02:41:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:05,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519935863] [2024-11-28 02:41:05,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:05,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:05,627 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 02:41:05,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:05,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519935863] [2024-11-28 02:41:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519935863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:05,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:05,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109874614] [2024-11-28 02:41:05,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:05,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:05,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:05,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:05,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:05,630 INFO L87 Difference]: Start difference. First operand 9986 states and 15167 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:06,908 INFO L93 Difference]: Finished difference Result 19058 states and 30636 transitions. [2024-11-28 02:41:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:06,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:06,938 INFO L225 Difference]: With dead ends: 19058 [2024-11-28 02:41:06,938 INFO L226 Difference]: Without dead ends: 11563 [2024-11-28 02:41:06,949 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 02:41:06,950 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 1026 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:06,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1397 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:41:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11563 states. [2024-11-28 02:41:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11563 to 9986. [2024-11-28 02:41:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 8930 states have (on average 1.5157894736842106) internal successors, (13536), 9023 states have internal predecessors, (13536), 623 states have call successors, (623), 298 states have call predecessors, (623), 431 states have return successors, (991), 680 states have call predecessors, (991), 620 states have call successors, (991) [2024-11-28 02:41:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 15150 transitions. [2024-11-28 02:41:07,654 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 15150 transitions. Word has length 188 [2024-11-28 02:41:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:07,654 INFO L471 AbstractCegarLoop]: Abstraction has 9986 states and 15150 transitions. [2024-11-28 02:41:07,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 15150 transitions. [2024-11-28 02:41:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:07,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:07,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:07,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:41:07,658 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:07,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash 874063198, now seen corresponding path program 1 times [2024-11-28 02:41:07,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472533224] [2024-11-28 02:41:07,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:07,769 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 02:41:07,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:07,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472533224] [2024-11-28 02:41:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472533224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:07,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:07,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:41:07,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470229257] [2024-11-28 02:41:07,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:07,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:41:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:07,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:41:07,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:41:07,772 INFO L87 Difference]: Start difference. First operand 9986 states and 15150 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:09,165 INFO L93 Difference]: Finished difference Result 18975 states and 30436 transitions. [2024-11-28 02:41:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:41:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:09,196 INFO L225 Difference]: With dead ends: 18975 [2024-11-28 02:41:09,197 INFO L226 Difference]: Without dead ends: 11480 [2024-11-28 02:41:09,206 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 02:41:09,207 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 1023 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:09,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1389 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:41:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11480 states. [2024-11-28 02:41:09,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11480 to 9986. [2024-11-28 02:41:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 8930 states have (on average 1.513885778275476) internal successors, (13519), 9023 states have internal predecessors, (13519), 623 states have call successors, (623), 298 states have call predecessors, (623), 431 states have return successors, (991), 680 states have call predecessors, (991), 620 states have call successors, (991) [2024-11-28 02:41:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 15133 transitions. [2024-11-28 02:41:09,885 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 15133 transitions. Word has length 188 [2024-11-28 02:41:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:09,885 INFO L471 AbstractCegarLoop]: Abstraction has 9986 states and 15133 transitions. [2024-11-28 02:41:09,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 15133 transitions. [2024-11-28 02:41:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:09,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:09,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:09,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:41:09,891 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:09,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash -531128480, now seen corresponding path program 1 times [2024-11-28 02:41:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:09,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524380012] [2024-11-28 02:41:09,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:10,070 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 02:41:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:10,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524380012] [2024-11-28 02:41:10,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524380012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:10,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:41:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122246778] [2024-11-28 02:41:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:10,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:10,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:10,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:41:10,072 INFO L87 Difference]: Start difference. First operand 9986 states and 15133 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:12,732 INFO L93 Difference]: Finished difference Result 26266 states and 42597 transitions. [2024-11-28 02:41:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:41:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:12,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:12,776 INFO L225 Difference]: With dead ends: 26266 [2024-11-28 02:41:12,777 INFO L226 Difference]: Without dead ends: 18771 [2024-11-28 02:41:12,792 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 02:41:12,792 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 1348 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:12,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 3489 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:41:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18771 states. [2024-11-28 02:41:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18771 to 18415. [2024-11-28 02:41:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18415 states, 16765 states have (on average 1.5853862212943632) internal successors, (26579), 17004 states have internal predecessors, (26579), 975 states have call successors, (975), 394 states have call predecessors, (975), 673 states have return successors, (2111), 1048 states have call predecessors, (2111), 972 states have call successors, (2111) [2024-11-28 02:41:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18415 states to 18415 states and 29665 transitions. [2024-11-28 02:41:13,858 INFO L78 Accepts]: Start accepts. Automaton has 18415 states and 29665 transitions. Word has length 188 [2024-11-28 02:41:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:13,859 INFO L471 AbstractCegarLoop]: Abstraction has 18415 states and 29665 transitions. [2024-11-28 02:41:13,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 18415 states and 29665 transitions. [2024-11-28 02:41:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:13,864 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:13,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:13,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:41:13,864 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:13,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1363205406, now seen corresponding path program 1 times [2024-11-28 02:41:13,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:13,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312112274] [2024-11-28 02:41:13,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:14,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:14,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312112274] [2024-11-28 02:41:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312112274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:14,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:14,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:41:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934402326] [2024-11-28 02:41:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:14,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:14,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:14,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:41:14,023 INFO L87 Difference]: Start difference. First operand 18415 states and 29665 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:17,114 INFO L93 Difference]: Finished difference Result 57095 states and 96904 transitions. [2024-11-28 02:41:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:41:17,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:17,220 INFO L225 Difference]: With dead ends: 57095 [2024-11-28 02:41:17,220 INFO L226 Difference]: Without dead ends: 41171 [2024-11-28 02:41:17,257 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 02:41:17,257 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 1473 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:17,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 3450 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:41:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41171 states. [2024-11-28 02:41:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41171 to 37445. [2024-11-28 02:41:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37445 states, 34477 states have (on average 1.6436754938074658) internal successors, (56669), 35170 states have internal predecessors, (56669), 1647 states have call successors, (1647), 586 states have call predecessors, (1647), 1319 states have return successors, (5855), 1752 states have call predecessors, (5855), 1644 states have call successors, (5855) [2024-11-28 02:41:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37445 states to 37445 states and 64171 transitions. [2024-11-28 02:41:19,612 INFO L78 Accepts]: Start accepts. Automaton has 37445 states and 64171 transitions. Word has length 188 [2024-11-28 02:41:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:19,613 INFO L471 AbstractCegarLoop]: Abstraction has 37445 states and 64171 transitions. [2024-11-28 02:41:19,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 37445 states and 64171 transitions. [2024-11-28 02:41:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:19,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:19,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:19,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:41:19,623 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:19,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 440037980, now seen corresponding path program 1 times [2024-11-28 02:41:19,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:19,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192689336] [2024-11-28 02:41:19,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:19,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:19,771 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 02:41:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192689336] [2024-11-28 02:41:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192689336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:41:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789721476] [2024-11-28 02:41:19,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:19,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:19,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:19,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:41:19,772 INFO L87 Difference]: Start difference. First operand 37445 states and 64171 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:26,210 INFO L93 Difference]: Finished difference Result 123719 states and 223024 transitions. [2024-11-28 02:41:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:41:26,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 188 [2024-11-28 02:41:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:26,501 INFO L225 Difference]: With dead ends: 123719 [2024-11-28 02:41:26,501 INFO L226 Difference]: Without dead ends: 88765 [2024-11-28 02:41:26,602 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 02:41:26,603 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 1708 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:26,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1753 Valid, 3434 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:41:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88765 states. [2024-11-28 02:41:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88765 to 81394. [2024-11-28 02:41:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81394 states, 75336 states have (on average 1.6901481363491557) internal successors, (127329), 77423 states have internal predecessors, (127329), 2959 states have call successors, (2959), 970 states have call predecessors, (2959), 3097 states have return successors, (19455), 3128 states have call predecessors, (19455), 2956 states have call successors, (19455) [2024-11-28 02:41:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81394 states to 81394 states and 149743 transitions. [2024-11-28 02:41:33,033 INFO L78 Accepts]: Start accepts. Automaton has 81394 states and 149743 transitions. Word has length 188 [2024-11-28 02:41:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:33,033 INFO L471 AbstractCegarLoop]: Abstraction has 81394 states and 149743 transitions. [2024-11-28 02:41:33,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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 02:41:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 81394 states and 149743 transitions. [2024-11-28 02:41:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 02:41:33,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:33,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:41:33,047 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:33,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash 825900382, now seen corresponding path program 1 times [2024-11-28 02:41:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414398577] [2024-11-28 02:41:33,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:33,211 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 02:41:33,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414398577] [2024-11-28 02:41:33,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414398577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:33,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:41:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764131479] [2024-11-28 02:41:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:33,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:33,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:33,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:41:33,214 INFO L87 Difference]: Start difference. First operand 81394 states and 149743 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 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)