./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/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 ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:24:41,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:24:41,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:24:41,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:24:41,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:24:41,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:24:41,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:24:41,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:24:41,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:24:41,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:24:41,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:24:41,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:24:41,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:24:41,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:24:41,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:24:41,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:24:41,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:24:41,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:24:41,395 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:24:41,396 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:41,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:41,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:41,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:41,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:24:41,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:24:41,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:24:41,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:24:41,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:24:41,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:24:41,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:24:41,399 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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/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 -> ecd70163e84c8e1a236d7543bf55ca7587f7becacb8c522f7caae4b1076f13b5 [2024-11-27 20:24:41,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:24:41,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:24:41,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:24:41,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:24:41,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:24:41,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2024-11-27 20:24:44,729 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/data/56c848db4/7b00bf91dfb24ff7936e0c47d0be815b/FLAGfcb734574 [2024-11-27 20:24:45,107 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:24:45,107 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2024-11-27 20:24:45,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/data/56c848db4/7b00bf91dfb24ff7936e0c47d0be815b/FLAGfcb734574 [2024-11-27 20:24:45,154 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/data/56c848db4/7b00bf91dfb24ff7936e0c47d0be815b [2024-11-27 20:24:45,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:24:45,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:24:45,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:45,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:24:45,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:24:45,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ade2882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45, skipping insertion in model container [2024-11-27 20:24:45,170 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:24:45,399 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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2024-11-27 20:24:45,500 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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2024-11-27 20:24:45,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:45,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:24:45,697 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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[914,927] [2024-11-27 20:24:45,721 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_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-1.c[7115,7128] [2024-11-27 20:24:45,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:45,817 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:24:45,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45 WrapperNode [2024-11-27 20:24:45,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:45,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:45,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:24:45,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:24:45,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,935 INFO L138 Inliner]: procedures = 75, calls = 91, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 996 [2024-11-27 20:24:45,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:45,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:24:45,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:24:45,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:24:45,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,970 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:24:45,971 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,985 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:45,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:46,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:46,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:46,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:46,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:24:46,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:24:46,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:24:46,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:24:46,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (1/1) ... [2024-11-27 20:24:46,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:46,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:46,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:24:46,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:24:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:24:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-27 20:24:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-27 20:24:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-27 20:24:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-27 20:24:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-27 20:24:46,091 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-27 20:24:46,091 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-27 20:24:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-27 20:24:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-27 20:24:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-27 20:24:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-27 20:24:46,092 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-27 20:24:46,092 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-27 20:24:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-27 20:24:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-27 20:24:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-27 20:24:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-27 20:24:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:24:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-27 20:24:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-27 20:24:46,093 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-27 20:24:46,093 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-27 20:24:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:24:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:24:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-27 20:24:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-27 20:24:46,094 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-27 20:24:46,094 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-27 20:24:46,265 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:24:46,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:24:47,934 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2024-11-27 20:24:47,934 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:24:47,969 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:24:47,970 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-27 20:24:47,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:47 BoogieIcfgContainer [2024-11-27 20:24:47,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:24:47,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:24:47,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:24:47,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:24:47,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:24:45" (1/3) ... [2024-11-27 20:24:47,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58248dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:47, skipping insertion in model container [2024-11-27 20:24:47,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:45" (2/3) ... [2024-11-27 20:24:47,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58248dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:47, skipping insertion in model container [2024-11-27 20:24:47,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:47" (3/3) ... [2024-11-27 20:24:47,985 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.11.cil-1.c [2024-11-27 20:24:48,001 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:24:48,004 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.11.cil-1.c that has 16 procedures, 460 locations, 1 initial locations, 18 loop locations, and 2 error locations. [2024-11-27 20:24:48,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:24:48,110 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;@4a4514e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:24:48,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 20:24:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 403 states have (on average 1.6426799007444168) internal successors, (662), 409 states have internal predecessors, (662), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-27 20:24:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:48,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:48,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:48,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:48,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash 400427848, now seen corresponding path program 1 times [2024-11-27 20:24:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:48,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719362744] [2024-11-27 20:24:48,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:48,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:48,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719362744] [2024-11-27 20:24:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719362744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:48,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:24:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96929888] [2024-11-27 20:24:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:48,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:24:48,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:48,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:24:48,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:48,895 INFO L87 Difference]: Start difference. First operand has 460 states, 403 states have (on average 1.6426799007444168) internal successors, (662), 409 states have internal predecessors, (662), 41 states have call successors, (41), 15 states have call predecessors, (41), 15 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:50,305 INFO L93 Difference]: Finished difference Result 991 states and 1598 transitions. [2024-11-27 20:24:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:50,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-27 20:24:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:50,322 INFO L225 Difference]: With dead ends: 991 [2024-11-27 20:24:50,322 INFO L226 Difference]: Without dead ends: 548 [2024-11-27 20:24:50,328 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 [2024-11-27 20:24:50,331 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 457 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:50,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1473 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:24:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-27 20:24:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 541. [2024-11-27 20:24:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 465 states have (on average 1.5376344086021505) internal successors, (715), 472 states have internal predecessors, (715), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2024-11-27 20:24:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 820 transitions. [2024-11-27 20:24:50,429 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 820 transitions. Word has length 62 [2024-11-27 20:24:50,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:50,430 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 820 transitions. [2024-11-27 20:24:50,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 820 transitions. [2024-11-27 20:24:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:50,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:50,434 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:24:50,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:50,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 603763848, now seen corresponding path program 1 times [2024-11-27 20:24:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404809378] [2024-11-27 20:24:50,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:50,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404809378] [2024-11-27 20:24:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404809378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:50,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147431411] [2024-11-27 20:24:50,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:50,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:50,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:50,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:50,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:50,779 INFO L87 Difference]: Start difference. First operand 541 states and 820 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:52,222 INFO L93 Difference]: Finished difference Result 846 states and 1239 transitions. [2024-11-27 20:24:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:24:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-27 20:24:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:52,229 INFO L225 Difference]: With dead ends: 846 [2024-11-27 20:24:52,229 INFO L226 Difference]: Without dead ends: 677 [2024-11-27 20:24:52,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:24:52,231 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 1007 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:52,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1645 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:24:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-27 20:24:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 633. [2024-11-27 20:24:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 537 states have (on average 1.5176908752327747) internal successors, (815), 546 states have internal predecessors, (815), 63 states have call successors, (63), 29 states have call predecessors, (63), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2024-11-27 20:24:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 950 transitions. [2024-11-27 20:24:52,320 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 950 transitions. Word has length 62 [2024-11-27 20:24:52,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:52,320 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 950 transitions. [2024-11-27 20:24:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 950 transitions. [2024-11-27 20:24:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:52,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:52,329 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:52,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:24:52,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:52,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1752041402, now seen corresponding path program 1 times [2024-11-27 20:24:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031317371] [2024-11-27 20:24:52,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031317371] [2024-11-27 20:24:52,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031317371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:52,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:52,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:52,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410473041] [2024-11-27 20:24:52,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:52,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:52,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:52,483 INFO L87 Difference]: Start difference. First operand 633 states and 950 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:52,565 INFO L93 Difference]: Finished difference Result 893 states and 1311 transitions. [2024-11-27 20:24:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-27 20:24:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:52,575 INFO L225 Difference]: With dead ends: 893 [2024-11-27 20:24:52,575 INFO L226 Difference]: Without dead ends: 638 [2024-11-27 20:24:52,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:52,578 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 0 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:52,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3440 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:24:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-27 20:24:52,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2024-11-27 20:24:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 541 states have (on average 1.510166358595194) internal successors, (817), 550 states have internal predecessors, (817), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (73), 62 states have call predecessors, (73), 59 states have call successors, (73) [2024-11-27 20:24:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 953 transitions. [2024-11-27 20:24:52,635 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 953 transitions. Word has length 62 [2024-11-27 20:24:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:52,636 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 953 transitions. [2024-11-27 20:24:52,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 953 transitions. [2024-11-27 20:24:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:52,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:52,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:52,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:24:52,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:52,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1698920392, now seen corresponding path program 1 times [2024-11-27 20:24:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509836655] [2024-11-27 20:24:52,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509836655] [2024-11-27 20:24:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509836655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:52,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:52,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401632264] [2024-11-27 20:24:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:52,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:52,753 INFO L87 Difference]: Start difference. First operand 638 states and 953 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) [2024-11-27 20:24:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:53,804 INFO L93 Difference]: Finished difference Result 2564 states and 3637 transitions. [2024-11-27 20:24:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:24:53,806 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 [2024-11-27 20:24:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:53,829 INFO L225 Difference]: With dead ends: 2564 [2024-11-27 20:24:53,830 INFO L226 Difference]: Without dead ends: 2304 [2024-11-27 20:24:53,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:53,835 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 1827 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:53,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 2732 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:24:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2024-11-27 20:24:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2174. [2024-11-27 20:24:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 1738 states have (on average 1.385500575373993) internal successors, (2408), 1775 states have internal predecessors, (2408), 228 states have call successors, (228), 173 states have call predecessors, (228), 206 states have return successors, (342), 229 states have call predecessors, (342), 224 states have call successors, (342) [2024-11-27 20:24:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2978 transitions. [2024-11-27 20:24:54,162 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2978 transitions. Word has length 62 [2024-11-27 20:24:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:54,163 INFO L471 AbstractCegarLoop]: Abstraction has 2174 states and 2978 transitions. [2024-11-27 20:24:54,163 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) [2024-11-27 20:24:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2978 transitions. [2024-11-27 20:24:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:54,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:54,165 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:54,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:24:54,166 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:54,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1677072281, now seen corresponding path program 1 times [2024-11-27 20:24:54,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:54,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36630585] [2024-11-27 20:24:54,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:54,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:54,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:54,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36630585] [2024-11-27 20:24:54,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36630585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:54,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:54,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:54,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437220841] [2024-11-27 20:24:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:54,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:54,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:54,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:54,304 INFO L87 Difference]: Start difference. First operand 2174 states and 2978 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:54,526 INFO L93 Difference]: Finished difference Result 4015 states and 5469 transitions. [2024-11-27 20:24:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:54,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-27 20:24:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:54,542 INFO L225 Difference]: With dead ends: 4015 [2024-11-27 20:24:54,542 INFO L226 Difference]: Without dead ends: 2219 [2024-11-27 20:24:54,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:54,550 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 0 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:54,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3440 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:24:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2024-11-27 20:24:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2024-11-27 20:24:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 1774 states have (on average 1.3692220969560316) internal successors, (2429), 1811 states have internal predecessors, (2429), 228 states have call successors, (228), 173 states have call predecessors, (228), 215 states have return successors, (360), 238 states have call predecessors, (360), 224 states have call successors, (360) [2024-11-27 20:24:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3017 transitions. [2024-11-27 20:24:54,812 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3017 transitions. Word has length 62 [2024-11-27 20:24:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:54,813 INFO L471 AbstractCegarLoop]: Abstraction has 2219 states and 3017 transitions. [2024-11-27 20:24:54,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3017 transitions. [2024-11-27 20:24:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:54,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:54,817 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:54,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:24:54,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:54,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1615032667, now seen corresponding path program 1 times [2024-11-27 20:24:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505548506] [2024-11-27 20:24:54,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:55,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505548506] [2024-11-27 20:24:55,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505548506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:55,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:55,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:24:55,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136958822] [2024-11-27 20:24:55,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:55,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:55,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:55,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:55,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:24:55,071 INFO L87 Difference]: Start difference. First operand 2219 states and 3017 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:56,527 INFO L93 Difference]: Finished difference Result 3915 states and 5206 transitions. [2024-11-27 20:24:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:24:56,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-27 20:24:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:56,542 INFO L225 Difference]: With dead ends: 3915 [2024-11-27 20:24:56,542 INFO L226 Difference]: Without dead ends: 2421 [2024-11-27 20:24:56,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:24:56,547 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1014 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:56,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1451 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:24:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2024-11-27 20:24:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2229. [2024-11-27 20:24:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1786 states have (on average 1.3628219484882418) internal successors, (2434), 1818 states have internal predecessors, (2434), 229 states have call successors, (229), 174 states have call predecessors, (229), 212 states have return successors, (344), 240 states have call predecessors, (344), 225 states have call successors, (344) [2024-11-27 20:24:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3007 transitions. [2024-11-27 20:24:56,736 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3007 transitions. Word has length 62 [2024-11-27 20:24:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:56,738 INFO L471 AbstractCegarLoop]: Abstraction has 2229 states and 3007 transitions. [2024-11-27 20:24:56,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3007 transitions. [2024-11-27 20:24:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:24:56,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:56,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:56,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:24:56,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:56,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1192330841, now seen corresponding path program 1 times [2024-11-27 20:24:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143383306] [2024-11-27 20:24:56,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143383306] [2024-11-27 20:24:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143383306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:24:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329374203] [2024-11-27 20:24:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:56,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:56,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:56,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:56,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:56,841 INFO L87 Difference]: Start difference. First operand 2229 states and 3007 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:57,892 INFO L93 Difference]: Finished difference Result 5858 states and 7781 transitions. [2024-11-27 20:24:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:24:57,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-27 20:24:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:57,919 INFO L225 Difference]: With dead ends: 5858 [2024-11-27 20:24:57,920 INFO L226 Difference]: Without dead ends: 4010 [2024-11-27 20:24:57,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:57,926 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 970 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:57,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 739 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:24:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2024-11-27 20:24:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 4006. [2024-11-27 20:24:58,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4006 states, 3150 states have (on average 1.3111111111111111) internal successors, (4130), 3212 states have internal predecessors, (4130), 431 states have call successors, (431), 340 states have call predecessors, (431), 423 states have return successors, (722), 460 states have call predecessors, (722), 427 states have call successors, (722) [2024-11-27 20:24:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4006 states to 4006 states and 5283 transitions. [2024-11-27 20:24:58,245 INFO L78 Accepts]: Start accepts. Automaton has 4006 states and 5283 transitions. Word has length 62 [2024-11-27 20:24:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:58,246 INFO L471 AbstractCegarLoop]: Abstraction has 4006 states and 5283 transitions. [2024-11-27 20:24:58,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 20:24:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4006 states and 5283 transitions. [2024-11-27 20:24:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 20:24:58,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:58,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:58,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:24:58,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:58,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 599666950, now seen corresponding path program 1 times [2024-11-27 20:24:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:58,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630057491] [2024-11-27 20:24:58,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:58,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630057491] [2024-11-27 20:24:58,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630057491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:58,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:58,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:24:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747552003] [2024-11-27 20:24:58,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:58,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:58,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:58,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:58,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:58,312 INFO L87 Difference]: Start difference. First operand 4006 states and 5283 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:58,754 INFO L93 Difference]: Finished difference Result 9983 states and 13149 transitions. [2024-11-27 20:24:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-27 20:24:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:58,796 INFO L225 Difference]: With dead ends: 9983 [2024-11-27 20:24:58,797 INFO L226 Difference]: Without dead ends: 6337 [2024-11-27 20:24:58,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:58,811 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 102 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1360 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 [2024-11-27 20:24:58,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1360 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:24:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2024-11-27 20:24:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6203. [2024-11-27 20:24:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6203 states, 4809 states have (on average 1.2938240798502807) internal successors, (6222), 4888 states have internal predecessors, (6222), 692 states have call successors, (692), 572 states have call predecessors, (692), 700 states have return successors, (1176), 749 states have call predecessors, (1176), 688 states have call successors, (1176) [2024-11-27 20:24:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6203 states to 6203 states and 8090 transitions. [2024-11-27 20:24:59,444 INFO L78 Accepts]: Start accepts. Automaton has 6203 states and 8090 transitions. Word has length 63 [2024-11-27 20:24:59,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:59,444 INFO L471 AbstractCegarLoop]: Abstraction has 6203 states and 8090 transitions. [2024-11-27 20:24:59,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:24:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6203 states and 8090 transitions. [2024-11-27 20:24:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:24:59,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:59,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:59,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:24:59,448 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:59,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 35296015, now seen corresponding path program 1 times [2024-11-27 20:24:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814343260] [2024-11-27 20:24:59,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:59,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814343260] [2024-11-27 20:24:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814343260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:24:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062442917] [2024-11-27 20:24:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:59,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:59,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:59,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:59,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:59,594 INFO L87 Difference]: Start difference. First operand 6203 states and 8090 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:25:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:00,465 INFO L93 Difference]: Finished difference Result 7321 states and 9469 transitions. [2024-11-27 20:25:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:00,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2024-11-27 20:25:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:00,518 INFO L225 Difference]: With dead ends: 7321 [2024-11-27 20:25:00,518 INFO L226 Difference]: Without dead ends: 7318 [2024-11-27 20:25:00,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:00,523 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 1291 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:00,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 788 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:25:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2024-11-27 20:25:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 7219. [2024-11-27 20:25:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7219 states, 5574 states have (on average 1.28345891639756) internal successors, (7154), 5662 states have internal predecessors, (7154), 818 states have call successors, (818), 686 states have call predecessors, (818), 825 states have return successors, (1369), 877 states have call predecessors, (1369), 815 states have call successors, (1369) [2024-11-27 20:25:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7219 states to 7219 states and 9341 transitions. [2024-11-27 20:25:01,369 INFO L78 Accepts]: Start accepts. Automaton has 7219 states and 9341 transitions. Word has length 68 [2024-11-27 20:25:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:01,369 INFO L471 AbstractCegarLoop]: Abstraction has 7219 states and 9341 transitions. [2024-11-27 20:25:01,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:25:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7219 states and 9341 transitions. [2024-11-27 20:25:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:25:01,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:01,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:01,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:25:01,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:01,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1092803653, now seen corresponding path program 1 times [2024-11-27 20:25:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585508788] [2024-11-27 20:25:01,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585508788] [2024-11-27 20:25:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585508788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262040592] [2024-11-27 20:25:01,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:01,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:01,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:01,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:01,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:25:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:01,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:25:01,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:02,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262040592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:02,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:02,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-27 20:25:02,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852500534] [2024-11-27 20:25:02,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:02,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:25:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:02,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:25:02,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:02,303 INFO L87 Difference]: Start difference. First operand 7219 states and 9341 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:25:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:03,970 INFO L93 Difference]: Finished difference Result 15095 states and 19314 transitions. [2024-11-27 20:25:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:25:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 69 [2024-11-27 20:25:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:04,050 INFO L225 Difference]: With dead ends: 15095 [2024-11-27 20:25:04,051 INFO L226 Difference]: Without dead ends: 15092 [2024-11-27 20:25:04,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:04,059 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 1055 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:04,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 3197 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:25:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2024-11-27 20:25:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 13782. [2024-11-27 20:25:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13782 states, 10613 states have (on average 1.2734382361255066) internal successors, (13515), 10781 states have internal predecessors, (13515), 1550 states have call successors, (1550), 1320 states have call predecessors, (1550), 1617 states have return successors, (2636), 1687 states have call predecessors, (2636), 1547 states have call successors, (2636) [2024-11-27 20:25:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13782 states to 13782 states and 17701 transitions. [2024-11-27 20:25:05,803 INFO L78 Accepts]: Start accepts. Automaton has 13782 states and 17701 transitions. Word has length 69 [2024-11-27 20:25:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:05,804 INFO L471 AbstractCegarLoop]: Abstraction has 13782 states and 17701 transitions. [2024-11-27 20:25:05,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 20:25:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13782 states and 17701 transitions. [2024-11-27 20:25:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:25:05,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:05,808 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:05,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:06,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:25:06,009 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:06,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash 155183267, now seen corresponding path program 2 times [2024-11-27 20:25:06,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29810094] [2024-11-27 20:25:06,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:06,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:06,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29810094] [2024-11-27 20:25:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29810094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:06,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:25:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718370571] [2024-11-27 20:25:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:06,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:25:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:06,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:25:06,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:06,083 INFO L87 Difference]: Start difference. First operand 13782 states and 17701 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:25:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:06,896 INFO L93 Difference]: Finished difference Result 20508 states and 26390 transitions. [2024-11-27 20:25:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:25:06,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-11-27 20:25:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:06,952 INFO L225 Difference]: With dead ends: 20508 [2024-11-27 20:25:06,952 INFO L226 Difference]: Without dead ends: 7932 [2024-11-27 20:25:06,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:06,992 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 661 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:06,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 878 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2024-11-27 20:25:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 7834. [2024-11-27 20:25:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 6066 states have (on average 1.2535443455324762) internal successors, (7604), 6148 states have internal predecessors, (7604), 884 states have call successors, (884), 742 states have call predecessors, (884), 882 states have return successors, (1382), 950 states have call predecessors, (1382), 881 states have call successors, (1382) [2024-11-27 20:25:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 9870 transitions. [2024-11-27 20:25:07,803 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 9870 transitions. Word has length 71 [2024-11-27 20:25:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:07,804 INFO L471 AbstractCegarLoop]: Abstraction has 7834 states and 9870 transitions. [2024-11-27 20:25:07,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 20:25:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 9870 transitions. [2024-11-27 20:25:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 20:25:07,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:07,808 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:07,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:25:07,808 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:07,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -2125971341, now seen corresponding path program 1 times [2024-11-27 20:25:07,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:07,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822071663] [2024-11-27 20:25:07,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:25:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822071663] [2024-11-27 20:25:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822071663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626619355] [2024-11-27 20:25:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:07,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:07,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:07,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:07,966 INFO L87 Difference]: Start difference. First operand 7834 states and 9870 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:25:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:11,013 INFO L93 Difference]: Finished difference Result 22836 states and 28673 transitions. [2024-11-27 20:25:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:25:11,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-27 20:25:11,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:11,107 INFO L225 Difference]: With dead ends: 22836 [2024-11-27 20:25:11,107 INFO L226 Difference]: Without dead ends: 15386 [2024-11-27 20:25:11,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:25:11,131 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 735 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:11,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1934 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:25:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15386 states. [2024-11-27 20:25:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15386 to 14743. [2024-11-27 20:25:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14743 states, 11284 states have (on average 1.2192484934420418) internal successors, (13758), 11474 states have internal predecessors, (13758), 1703 states have call successors, (1703), 1442 states have call predecessors, (1703), 1754 states have return successors, (2895), 1839 states have call predecessors, (2895), 1700 states have call successors, (2895) [2024-11-27 20:25:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14743 states to 14743 states and 18356 transitions. [2024-11-27 20:25:13,124 INFO L78 Accepts]: Start accepts. Automaton has 14743 states and 18356 transitions. Word has length 80 [2024-11-27 20:25:13,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:13,125 INFO L471 AbstractCegarLoop]: Abstraction has 14743 states and 18356 transitions. [2024-11-27 20:25:13,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:25:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 14743 states and 18356 transitions. [2024-11-27 20:25:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 20:25:13,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:13,133 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:13,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:25:13,133 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:13,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash 913114707, now seen corresponding path program 1 times [2024-11-27 20:25:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112049084] [2024-11-27 20:25:13,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:25:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112049084] [2024-11-27 20:25:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112049084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:25:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566297731] [2024-11-27 20:25:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:13,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:25:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:13,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:25:13,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:13,315 INFO L87 Difference]: Start difference. First operand 14743 states and 18356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:25:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:16,127 INFO L93 Difference]: Finished difference Result 26317 states and 32683 transitions. [2024-11-27 20:25:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:25:16,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-27 20:25:16,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:16,192 INFO L225 Difference]: With dead ends: 26317 [2024-11-27 20:25:16,192 INFO L226 Difference]: Without dead ends: 12567 [2024-11-27 20:25:16,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:25:16,222 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 1602 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:16,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 2003 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:25:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2024-11-27 20:25:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 11839. [2024-11-27 20:25:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11839 states, 9118 states have (on average 1.212327264751042) internal successors, (11054), 9262 states have internal predecessors, (11054), 1332 states have call successors, (1332), 1123 states have call predecessors, (1332), 1387 states have return successors, (2087), 1463 states have call predecessors, (2087), 1329 states have call successors, (2087) [2024-11-27 20:25:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 14473 transitions. [2024-11-27 20:25:17,338 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 14473 transitions. Word has length 86 [2024-11-27 20:25:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:17,338 INFO L471 AbstractCegarLoop]: Abstraction has 11839 states and 14473 transitions. [2024-11-27 20:25:17,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:25:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 14473 transitions. [2024-11-27 20:25:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 20:25:17,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:17,353 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] [2024-11-27 20:25:17,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:25:17,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:17,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 912512180, now seen corresponding path program 1 times [2024-11-27 20:25:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192703023] [2024-11-27 20:25:17,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 20:25:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192703023] [2024-11-27 20:25:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192703023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:17,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921394179] [2024-11-27 20:25:17,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:17,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:17,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:17,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:17,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:25:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:17,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:25:17,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:25:17,783 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:25:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921394179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:17,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:25:17,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-27 20:25:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927607200] [2024-11-27 20:25:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:17,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:17,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:17,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:25:17,787 INFO L87 Difference]: Start difference. First operand 11839 states and 14473 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) [2024-11-27 20:25:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:18,247 INFO L93 Difference]: Finished difference Result 16918 states and 20603 transitions. [2024-11-27 20:25:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:25:18,248 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 [2024-11-27 20:25:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:18,284 INFO L225 Difference]: With dead ends: 16918 [2024-11-27 20:25:18,284 INFO L226 Difference]: Without dead ends: 5471 [2024-11-27 20:25:18,304 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 [2024-11-27 20:25:18,305 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 0 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3426 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 [2024-11-27 20:25:18,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3426 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2024-11-27 20:25:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 5283. [2024-11-27 20:25:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 4174 states have (on average 1.2158600862482032) internal successors, (5075), 4219 states have internal predecessors, (5075), 542 states have call successors, (542), 434 states have call predecessors, (542), 565 states have return successors, (836), 630 states have call predecessors, (836), 539 states have call successors, (836) [2024-11-27 20:25:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 6453 transitions. [2024-11-27 20:25:18,740 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 6453 transitions. Word has length 139 [2024-11-27 20:25:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:18,740 INFO L471 AbstractCegarLoop]: Abstraction has 5283 states and 6453 transitions. [2024-11-27 20:25:18,740 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) [2024-11-27 20:25:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 6453 transitions. [2024-11-27 20:25:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 20:25:18,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:18,750 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] [2024-11-27 20:25:18,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:18,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:25:18,951 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:18,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -820059700, now seen corresponding path program 1 times [2024-11-27 20:25:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559614113] [2024-11-27 20:25:18,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 20:25:19,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:19,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559614113] [2024-11-27 20:25:19,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559614113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:19,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:19,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:25:19,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768978325] [2024-11-27 20:25:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:19,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:25:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:19,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:25:19,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:19,017 INFO L87 Difference]: Start difference. First operand 5283 states and 6453 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) [2024-11-27 20:25:19,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:19,581 INFO L93 Difference]: Finished difference Result 5596 states and 6819 transitions. [2024-11-27 20:25:19,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:25:19,582 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 [2024-11-27 20:25:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:19,613 INFO L225 Difference]: With dead ends: 5596 [2024-11-27 20:25:19,613 INFO L226 Difference]: Without dead ends: 4875 [2024-11-27 20:25:19,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:19,618 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 120 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:19,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1252 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:19,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2024-11-27 20:25:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4875. [2024-11-27 20:25:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 3862 states have (on average 1.2200932159502849) internal successors, (4712), 3904 states have internal predecessors, (4712), 496 states have call successors, (496), 394 states have call predecessors, (496), 515 states have return successors, (773), 577 states have call predecessors, (773), 493 states have call successors, (773) [2024-11-27 20:25:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 5981 transitions. [2024-11-27 20:25:20,338 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 5981 transitions. Word has length 141 [2024-11-27 20:25:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:20,339 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 5981 transitions. [2024-11-27 20:25:20,339 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) [2024-11-27 20:25:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 5981 transitions. [2024-11-27 20:25:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-27 20:25:20,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:20,350 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] [2024-11-27 20:25:20,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:25:20,350 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:20,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1792459005, now seen corresponding path program 1 times [2024-11-27 20:25:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836605623] [2024-11-27 20:25:20,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:20,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-27 20:25:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836605623] [2024-11-27 20:25:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836605623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137932931] [2024-11-27 20:25:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:20,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:20,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:20,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:20,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:20,492 INFO L87 Difference]: Start difference. First operand 4875 states and 5981 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) [2024-11-27 20:25:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:21,984 INFO L93 Difference]: Finished difference Result 8955 states and 10911 transitions. [2024-11-27 20:25:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:25:21,985 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 [2024-11-27 20:25:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:22,013 INFO L225 Difference]: With dead ends: 8955 [2024-11-27 20:25:22,013 INFO L226 Difference]: Without dead ends: 4827 [2024-11-27 20:25:22,021 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 [2024-11-27 20:25:22,022 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 342 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:22,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1429 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:25:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4827 states. [2024-11-27 20:25:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4827 to 4592. [2024-11-27 20:25:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 3646 states have (on average 1.2251782775644542) internal successors, (4467), 3697 states have internal predecessors, (4467), 462 states have call successors, (462), 368 states have call predecessors, (462), 482 states have return successors, (718), 527 states have call predecessors, (718), 459 states have call successors, (718) [2024-11-27 20:25:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 5647 transitions. [2024-11-27 20:25:22,425 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 5647 transitions. Word has length 150 [2024-11-27 20:25:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:22,427 INFO L471 AbstractCegarLoop]: Abstraction has 4592 states and 5647 transitions. [2024-11-27 20:25:22,427 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) [2024-11-27 20:25:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 5647 transitions. [2024-11-27 20:25:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 20:25:22,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:22,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:22,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:25:22,436 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:22,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1526158118, now seen corresponding path program 1 times [2024-11-27 20:25:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593853063] [2024-11-27 20:25:22,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 20:25:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593853063] [2024-11-27 20:25:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593853063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118041604] [2024-11-27 20:25:22,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:22,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:22,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:25:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:22,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:25:22,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:25:23,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-27 20:25:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118041604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:23,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-27 20:25:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773911326] [2024-11-27 20:25:23,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:23,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:25:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:23,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:25:23,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:25:23,462 INFO L87 Difference]: Start difference. First operand 4592 states and 5647 transitions. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-27 20:25:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:25,708 INFO L93 Difference]: Finished difference Result 12184 states and 15373 transitions. [2024-11-27 20:25:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:25:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 153 [2024-11-27 20:25:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:25,745 INFO L225 Difference]: With dead ends: 12184 [2024-11-27 20:25:25,745 INFO L226 Difference]: Without dead ends: 6447 [2024-11-27 20:25:25,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:25:25,759 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 2059 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:25,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 1687 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:25:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6447 states. [2024-11-27 20:25:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6447 to 5292. [2024-11-27 20:25:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 4123 states have (on average 1.2044627698277952) internal successors, (4966), 4201 states have internal predecessors, (4966), 564 states have call successors, (564), 462 states have call predecessors, (564), 603 states have return successors, (1017), 629 states have call predecessors, (1017), 561 states have call successors, (1017) [2024-11-27 20:25:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 6547 transitions. [2024-11-27 20:25:26,292 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 6547 transitions. Word has length 153 [2024-11-27 20:25:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:26,292 INFO L471 AbstractCegarLoop]: Abstraction has 5292 states and 6547 transitions. [2024-11-27 20:25:26,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-27 20:25:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 6547 transitions. [2024-11-27 20:25:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-27 20:25:26,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:26,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:26,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:25:26,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:25:26,501 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:26,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:26,501 INFO L85 PathProgramCache]: Analyzing trace with hash 663970488, now seen corresponding path program 1 times [2024-11-27 20:25:26,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:26,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658176903] [2024-11-27 20:25:26,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:26,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 20:25:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658176903] [2024-11-27 20:25:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658176903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473819084] [2024-11-27 20:25:26,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:26,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:26,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:26,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:25:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:26,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:25:26,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-27 20:25:26,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:25:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473819084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:25:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-27 20:25:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171824937] [2024-11-27 20:25:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:26,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:26,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:26,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:25:26,873 INFO L87 Difference]: Start difference. First operand 5292 states and 6547 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-27 20:25:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:27,905 INFO L93 Difference]: Finished difference Result 6894 states and 8429 transitions. [2024-11-27 20:25:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:25:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 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 [2024-11-27 20:25:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:27,924 INFO L225 Difference]: With dead ends: 6894 [2024-11-27 20:25:27,925 INFO L226 Difference]: Without dead ends: 1795 [2024-11-27 20:25:27,932 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 [2024-11-27 20:25:27,933 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 933 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:27,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1024 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:25:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2024-11-27 20:25:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1722. [2024-11-27 20:25:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1391 states have (on average 1.242271746944644) internal successors, (1728), 1406 states have internal predecessors, (1728), 172 states have call successors, (172), 131 states have call predecessors, (172), 157 states have return successors, (239), 185 states have call predecessors, (239), 169 states have call successors, (239) [2024-11-27 20:25:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2139 transitions. [2024-11-27 20:25:28,178 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2139 transitions. Word has length 169 [2024-11-27 20:25:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:28,178 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2139 transitions. [2024-11-27 20:25:28,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 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) [2024-11-27 20:25:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2139 transitions. [2024-11-27 20:25:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:28,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:28,181 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] [2024-11-27 20:25:28,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:25:28,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ff8dbb1-366e-4b38-b5ff-1acf4f240be5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:25:28,383 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:28,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1903654501, now seen corresponding path program 1 times [2024-11-27 20:25:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336346849] [2024-11-27 20:25:28,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:28,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336346849] [2024-11-27 20:25:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336346849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:28,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:25:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928139708] [2024-11-27 20:25:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:28,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:25:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:28,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:25:28,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:28,461 INFO L87 Difference]: Start difference. First operand 1722 states and 2139 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:28,630 INFO L93 Difference]: Finished difference Result 2068 states and 2685 transitions. [2024-11-27 20:25:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:25:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:28,644 INFO L225 Difference]: With dead ends: 2068 [2024-11-27 20:25:28,645 INFO L226 Difference]: Without dead ends: 1722 [2024-11-27 20:25:28,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:28,646 INFO L435 NwaCegarLoop]: 686 mSDtfsCounter, 553 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:28,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 810 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-27 20:25:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1722. [2024-11-27 20:25:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1391 states have (on average 1.2415528396836808) internal successors, (1727), 1406 states have internal predecessors, (1727), 172 states have call successors, (172), 131 states have call predecessors, (172), 157 states have return successors, (239), 185 states have call predecessors, (239), 169 states have call successors, (239) [2024-11-27 20:25:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2138 transitions. [2024-11-27 20:25:28,828 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2138 transitions. Word has length 166 [2024-11-27 20:25:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:28,829 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2138 transitions. [2024-11-27 20:25:28,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2138 transitions. [2024-11-27 20:25:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:28,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:28,833 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] [2024-11-27 20:25:28,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:25:28,833 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:28,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -498462823, now seen corresponding path program 1 times [2024-11-27 20:25:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:28,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226860089] [2024-11-27 20:25:28,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:28,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226860089] [2024-11-27 20:25:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226860089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679550948] [2024-11-27 20:25:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:28,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:28,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:28,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:28,954 INFO L87 Difference]: Start difference. First operand 1722 states and 2138 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:29,993 INFO L93 Difference]: Finished difference Result 2442 states and 3290 transitions. [2024-11-27 20:25:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:25:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:29,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:30,009 INFO L225 Difference]: With dead ends: 2442 [2024-11-27 20:25:30,010 INFO L226 Difference]: Without dead ends: 2104 [2024-11-27 20:25:30,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:30,011 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 1238 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:30,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1710 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:25:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2024-11-27 20:25:30,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2075. [2024-11-27 20:25:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1717 states have (on average 1.3104251601630752) internal successors, (2250), 1733 states have internal predecessors, (2250), 192 states have call successors, (192), 137 states have call predecessors, (192), 164 states have return successors, (260), 205 states have call predecessors, (260), 189 states have call successors, (260) [2024-11-27 20:25:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2702 transitions. [2024-11-27 20:25:30,186 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2702 transitions. Word has length 166 [2024-11-27 20:25:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:30,186 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 2702 transitions. [2024-11-27 20:25:30,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2702 transitions. [2024-11-27 20:25:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:30,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:30,189 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] [2024-11-27 20:25:30,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:25:30,189 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:30,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash 87971221, now seen corresponding path program 1 times [2024-11-27 20:25:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:30,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362396660] [2024-11-27 20:25:30,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:30,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362396660] [2024-11-27 20:25:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362396660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:30,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133808923] [2024-11-27 20:25:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:30,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:30,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:30,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:30,356 INFO L87 Difference]: Start difference. First operand 2075 states and 2702 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:31,610 INFO L93 Difference]: Finished difference Result 3219 states and 4551 transitions. [2024-11-27 20:25:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:31,626 INFO L225 Difference]: With dead ends: 3219 [2024-11-27 20:25:31,627 INFO L226 Difference]: Without dead ends: 2528 [2024-11-27 20:25:31,629 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 [2024-11-27 20:25:31,630 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 1273 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:31,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2415 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:25:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2024-11-27 20:25:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2403. [2024-11-27 20:25:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2018 states have (on average 1.3493557978196233) internal successors, (2723), 2035 states have internal predecessors, (2723), 212 states have call successors, (212), 143 states have call predecessors, (212), 171 states have return successors, (283), 226 states have call predecessors, (283), 209 states have call successors, (283) [2024-11-27 20:25:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3218 transitions. [2024-11-27 20:25:31,873 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3218 transitions. Word has length 166 [2024-11-27 20:25:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:31,874 INFO L471 AbstractCegarLoop]: Abstraction has 2403 states and 3218 transitions. [2024-11-27 20:25:31,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3218 transitions. [2024-11-27 20:25:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:31,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:31,877 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] [2024-11-27 20:25:31,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:25:31,878 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:31,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash 514525719, now seen corresponding path program 1 times [2024-11-27 20:25:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:31,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291697416] [2024-11-27 20:25:31,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:32,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291697416] [2024-11-27 20:25:32,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291697416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414798135] [2024-11-27 20:25:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:32,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:32,003 INFO L87 Difference]: Start difference. First operand 2403 states and 3218 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,722 INFO L93 Difference]: Finished difference Result 3532 states and 5046 transitions. [2024-11-27 20:25:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,740 INFO L225 Difference]: With dead ends: 3532 [2024-11-27 20:25:32,740 INFO L226 Difference]: Without dead ends: 2513 [2024-11-27 20:25:32,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:32,745 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 923 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:32,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1275 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:25:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2024-11-27 20:25:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2403. [2024-11-27 20:25:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2018 states have (on average 1.3478691774033698) internal successors, (2720), 2035 states have internal predecessors, (2720), 212 states have call successors, (212), 143 states have call predecessors, (212), 171 states have return successors, (283), 226 states have call predecessors, (283), 209 states have call successors, (283) [2024-11-27 20:25:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3215 transitions. [2024-11-27 20:25:32,998 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3215 transitions. Word has length 166 [2024-11-27 20:25:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,999 INFO L471 AbstractCegarLoop]: Abstraction has 2403 states and 3215 transitions. [2024-11-27 20:25:32,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3215 transitions. [2024-11-27 20:25:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:33,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:33,002 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] [2024-11-27 20:25:33,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:25:33,002 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:33,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 358545177, now seen corresponding path program 1 times [2024-11-27 20:25:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:33,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098399033] [2024-11-27 20:25:33,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:33,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:33,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098399033] [2024-11-27 20:25:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098399033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:33,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:33,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696771883] [2024-11-27 20:25:33,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:33,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:33,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:33,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:33,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:33,132 INFO L87 Difference]: Start difference. First operand 2403 states and 3215 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:33,792 INFO L93 Difference]: Finished difference Result 3527 states and 5030 transitions. [2024-11-27 20:25:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:33,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:33,806 INFO L225 Difference]: With dead ends: 3527 [2024-11-27 20:25:33,807 INFO L226 Difference]: Without dead ends: 2508 [2024-11-27 20:25:33,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:33,809 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 920 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:33,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1267 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:25:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2024-11-27 20:25:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2403. [2024-11-27 20:25:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2018 states have (on average 1.346382556987116) internal successors, (2717), 2035 states have internal predecessors, (2717), 212 states have call successors, (212), 143 states have call predecessors, (212), 171 states have return successors, (283), 226 states have call predecessors, (283), 209 states have call successors, (283) [2024-11-27 20:25:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3212 transitions. [2024-11-27 20:25:34,081 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3212 transitions. Word has length 166 [2024-11-27 20:25:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:34,082 INFO L471 AbstractCegarLoop]: Abstraction has 2403 states and 3212 transitions. [2024-11-27 20:25:34,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3212 transitions. [2024-11-27 20:25:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:34,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:34,085 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] [2024-11-27 20:25:34,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:25:34,086 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:34,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:34,086 INFO L85 PathProgramCache]: Analyzing trace with hash 769155543, now seen corresponding path program 1 times [2024-11-27 20:25:34,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872640737] [2024-11-27 20:25:34,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:34,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872640737] [2024-11-27 20:25:34,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872640737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:34,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:34,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917314516] [2024-11-27 20:25:34,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:34,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:34,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:34,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:34,246 INFO L87 Difference]: Start difference. First operand 2403 states and 3212 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:35,668 INFO L93 Difference]: Finished difference Result 4243 states and 6160 transitions. [2024-11-27 20:25:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:35,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:35,681 INFO L225 Difference]: With dead ends: 4243 [2024-11-27 20:25:35,682 INFO L226 Difference]: Without dead ends: 3224 [2024-11-27 20:25:35,684 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 [2024-11-27 20:25:35,686 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 1221 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:35,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 3143 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:25:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2024-11-27 20:25:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3095. [2024-11-27 20:25:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2654 states have (on average 1.4031650339110777) internal successors, (3724), 2675 states have internal predecessors, (3724), 252 states have call successors, (252), 155 states have call predecessors, (252), 187 states have return successors, (335), 268 states have call predecessors, (335), 249 states have call successors, (335) [2024-11-27 20:25:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4311 transitions. [2024-11-27 20:25:36,018 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4311 transitions. Word has length 166 [2024-11-27 20:25:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:36,019 INFO L471 AbstractCegarLoop]: Abstraction has 3095 states and 4311 transitions. [2024-11-27 20:25:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4311 transitions. [2024-11-27 20:25:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:36,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:36,021 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] [2024-11-27 20:25:36,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:25:36,021 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:36,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1018714279, now seen corresponding path program 1 times [2024-11-27 20:25:36,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:36,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918376148] [2024-11-27 20:25:36,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:36,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918376148] [2024-11-27 20:25:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918376148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956524659] [2024-11-27 20:25:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:36,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:36,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:36,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:36,165 INFO L87 Difference]: Start difference. First operand 3095 states and 4311 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:37,087 INFO L93 Difference]: Finished difference Result 5015 states and 7428 transitions. [2024-11-27 20:25:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:37,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:37,105 INFO L225 Difference]: With dead ends: 5015 [2024-11-27 20:25:37,105 INFO L226 Difference]: Without dead ends: 3304 [2024-11-27 20:25:37,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:37,109 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 916 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:37,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1253 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:25:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2024-11-27 20:25:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3095. [2024-11-27 20:25:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2654 states have (on average 1.401281085154484) internal successors, (3719), 2675 states have internal predecessors, (3719), 252 states have call successors, (252), 155 states have call predecessors, (252), 187 states have return successors, (335), 268 states have call predecessors, (335), 249 states have call successors, (335) [2024-11-27 20:25:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4306 transitions. [2024-11-27 20:25:37,352 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4306 transitions. Word has length 166 [2024-11-27 20:25:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:37,353 INFO L471 AbstractCegarLoop]: Abstraction has 3095 states and 4306 transitions. [2024-11-27 20:25:37,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4306 transitions. [2024-11-27 20:25:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:37,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:37,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:37,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 20:25:37,355 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:37,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1140369815, now seen corresponding path program 1 times [2024-11-27 20:25:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070662076] [2024-11-27 20:25:37,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:37,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:37,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:37,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070662076] [2024-11-27 20:25:37,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070662076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:37,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117230928] [2024-11-27 20:25:37,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:37,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:37,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:37,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:37,502 INFO L87 Difference]: Start difference. First operand 3095 states and 4306 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:38,757 INFO L93 Difference]: Finished difference Result 6447 states and 9702 transitions. [2024-11-27 20:25:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:38,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:38,774 INFO L225 Difference]: With dead ends: 6447 [2024-11-27 20:25:38,774 INFO L226 Difference]: Without dead ends: 4736 [2024-11-27 20:25:38,779 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 [2024-11-27 20:25:38,779 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 1208 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:38,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 3112 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:25:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2024-11-27 20:25:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 4581. [2024-11-27 20:25:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4022 states have (on average 1.4701640974639483) internal successors, (5913), 4057 states have internal predecessors, (5913), 332 states have call successors, (332), 179 states have call predecessors, (332), 225 states have return successors, (463), 352 states have call predecessors, (463), 329 states have call successors, (463) [2024-11-27 20:25:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6708 transitions. [2024-11-27 20:25:39,219 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6708 transitions. Word has length 166 [2024-11-27 20:25:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:39,219 INFO L471 AbstractCegarLoop]: Abstraction has 4581 states and 6708 transitions. [2024-11-27 20:25:39,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6708 transitions. [2024-11-27 20:25:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:39,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:39,222 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] [2024-11-27 20:25:39,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:25:39,222 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:39,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1210017689, now seen corresponding path program 1 times [2024-11-27 20:25:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682358464] [2024-11-27 20:25:39,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:39,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:39,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682358464] [2024-11-27 20:25:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682358464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:39,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:39,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:39,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374293743] [2024-11-27 20:25:39,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:39,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:39,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:39,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:39,364 INFO L87 Difference]: Start difference. First operand 4581 states and 6708 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:40,246 INFO L93 Difference]: Finished difference Result 8271 states and 12792 transitions. [2024-11-27 20:25:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:40,265 INFO L225 Difference]: With dead ends: 8271 [2024-11-27 20:25:40,265 INFO L226 Difference]: Without dead ends: 5074 [2024-11-27 20:25:40,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:40,274 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 912 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:40,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1239 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:25:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2024-11-27 20:25:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 4581. [2024-11-27 20:25:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4022 states have (on average 1.4679264047737444) internal successors, (5904), 4057 states have internal predecessors, (5904), 332 states have call successors, (332), 179 states have call predecessors, (332), 225 states have return successors, (463), 352 states have call predecessors, (463), 329 states have call successors, (463) [2024-11-27 20:25:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 6699 transitions. [2024-11-27 20:25:40,683 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 6699 transitions. Word has length 166 [2024-11-27 20:25:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:40,684 INFO L471 AbstractCegarLoop]: Abstraction has 4581 states and 6699 transitions. [2024-11-27 20:25:40,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 6699 transitions. [2024-11-27 20:25:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:40,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:40,686 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] [2024-11-27 20:25:40,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:25:40,686 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:40,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1627906391, now seen corresponding path program 1 times [2024-11-27 20:25:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139353927] [2024-11-27 20:25:40,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139353927] [2024-11-27 20:25:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139353927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:40,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:40,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825881137] [2024-11-27 20:25:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:40,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:40,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:40,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:40,827 INFO L87 Difference]: Start difference. First operand 4581 states and 6699 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:42,189 INFO L93 Difference]: Finished difference Result 11225 states and 17559 transitions. [2024-11-27 20:25:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:42,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:42,215 INFO L225 Difference]: With dead ends: 11225 [2024-11-27 20:25:42,216 INFO L226 Difference]: Without dead ends: 8028 [2024-11-27 20:25:42,221 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 [2024-11-27 20:25:42,222 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 1230 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:42,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 2236 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:25:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2024-11-27 20:25:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 7823. [2024-11-27 20:25:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7010 states have (on average 1.5358059914407989) internal successors, (10766), 7091 states have internal predecessors, (10766), 492 states have call successors, (492), 227 states have call predecessors, (492), 319 states have return successors, (815), 520 states have call predecessors, (815), 489 states have call successors, (815) [2024-11-27 20:25:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 12073 transitions. [2024-11-27 20:25:42,799 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 12073 transitions. Word has length 166 [2024-11-27 20:25:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:42,799 INFO L471 AbstractCegarLoop]: Abstraction has 7823 states and 12073 transitions. [2024-11-27 20:25:42,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 12073 transitions. [2024-11-27 20:25:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:42,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:42,802 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] [2024-11-27 20:25:42,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:25:42,802 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:42,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1268107303, now seen corresponding path program 1 times [2024-11-27 20:25:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:42,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982904143] [2024-11-27 20:25:42,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:42,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982904143] [2024-11-27 20:25:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982904143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:42,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502944767] [2024-11-27 20:25:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:42,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:42,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:42,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:42,911 INFO L87 Difference]: Start difference. First operand 7823 states and 12073 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:44,021 INFO L93 Difference]: Finished difference Result 15424 states and 24906 transitions. [2024-11-27 20:25:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:44,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:44,052 INFO L225 Difference]: With dead ends: 15424 [2024-11-27 20:25:44,052 INFO L226 Difference]: Without dead ends: 8985 [2024-11-27 20:25:44,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:44,070 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 907 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:44,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1219 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:25:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8985 states. [2024-11-27 20:25:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8985 to 7823. [2024-11-27 20:25:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7010 states have (on average 1.5333808844507846) internal successors, (10749), 7091 states have internal predecessors, (10749), 492 states have call successors, (492), 227 states have call predecessors, (492), 319 states have return successors, (815), 520 states have call predecessors, (815), 489 states have call successors, (815) [2024-11-27 20:25:44,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 12056 transitions. [2024-11-27 20:25:44,711 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 12056 transitions. Word has length 166 [2024-11-27 20:25:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:44,712 INFO L471 AbstractCegarLoop]: Abstraction has 7823 states and 12056 transitions. [2024-11-27 20:25:44,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 12056 transitions. [2024-11-27 20:25:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:44,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:44,714 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] [2024-11-27 20:25:44,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:25:44,715 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:44,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:44,715 INFO L85 PathProgramCache]: Analyzing trace with hash -904640805, now seen corresponding path program 1 times [2024-11-27 20:25:44,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:44,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157178797] [2024-11-27 20:25:44,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157178797] [2024-11-27 20:25:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157178797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851428933] [2024-11-27 20:25:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:44,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:44,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:44,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:44,825 INFO L87 Difference]: Start difference. First operand 7823 states and 12056 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:45,982 INFO L93 Difference]: Finished difference Result 15341 states and 24706 transitions. [2024-11-27 20:25:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:25:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:46,013 INFO L225 Difference]: With dead ends: 15341 [2024-11-27 20:25:46,013 INFO L226 Difference]: Without dead ends: 8902 [2024-11-27 20:25:46,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:46,028 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 902 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:46,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1209 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:25:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2024-11-27 20:25:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 7823. [2024-11-27 20:25:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7010 states have (on average 1.5309557774607703) internal successors, (10732), 7091 states have internal predecessors, (10732), 492 states have call successors, (492), 227 states have call predecessors, (492), 319 states have return successors, (815), 520 states have call predecessors, (815), 489 states have call successors, (815) [2024-11-27 20:25:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 12039 transitions. [2024-11-27 20:25:46,724 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 12039 transitions. Word has length 166 [2024-11-27 20:25:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:46,724 INFO L471 AbstractCegarLoop]: Abstraction has 7823 states and 12039 transitions. [2024-11-27 20:25:46,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 12039 transitions. [2024-11-27 20:25:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:46,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:46,727 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] [2024-11-27 20:25:46,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:25:46,727 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:46,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash -615821415, now seen corresponding path program 1 times [2024-11-27 20:25:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913987336] [2024-11-27 20:25:46,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913987336] [2024-11-27 20:25:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913987336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:46,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:46,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882989854] [2024-11-27 20:25:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:46,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:46,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:46,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:46,872 INFO L87 Difference]: Start difference. First operand 7823 states and 12039 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:48,779 INFO L93 Difference]: Finished difference Result 22727 states and 36818 transitions. [2024-11-27 20:25:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:48,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:48,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:48,813 INFO L225 Difference]: With dead ends: 22727 [2024-11-27 20:25:48,813 INFO L226 Difference]: Without dead ends: 16288 [2024-11-27 20:25:48,821 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 [2024-11-27 20:25:48,822 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 1484 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:48,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 3000 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:25:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16288 states. [2024-11-27 20:25:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16288 to 14655. [2024-11-27 20:25:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14655 states, 13296 states have (on average 1.5816787003610109) internal successors, (21030), 13523 states have internal predecessors, (21030), 796 states have call successors, (796), 323 states have call predecessors, (796), 561 states have return successors, (1887), 840 states have call predecessors, (1887), 793 states have call successors, (1887) [2024-11-27 20:25:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14655 states to 14655 states and 23713 transitions. [2024-11-27 20:25:49,654 INFO L78 Accepts]: Start accepts. Automaton has 14655 states and 23713 transitions. Word has length 166 [2024-11-27 20:25:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:49,654 INFO L471 AbstractCegarLoop]: Abstraction has 14655 states and 23713 transitions. [2024-11-27 20:25:49,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 14655 states and 23713 transitions. [2024-11-27 20:25:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:49,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:49,658 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] [2024-11-27 20:25:49,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:25:49,658 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:49,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:49,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1160693989, now seen corresponding path program 1 times [2024-11-27 20:25:49,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:49,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256057893] [2024-11-27 20:25:49,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:49,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:49,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256057893] [2024-11-27 20:25:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256057893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:49,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412658462] [2024-11-27 20:25:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:49,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:49,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:49,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:49,788 INFO L87 Difference]: Start difference. First operand 14655 states and 23713 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:52,713 INFO L93 Difference]: Finished difference Result 46073 states and 78126 transitions. [2024-11-27 20:25:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:52,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:52,810 INFO L225 Difference]: With dead ends: 46073 [2024-11-27 20:25:52,810 INFO L226 Difference]: Without dead ends: 32802 [2024-11-27 20:25:52,839 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 [2024-11-27 20:25:52,839 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 1259 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:52,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 2992 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:25:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32802 states. [2024-11-27 20:25:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32802 to 30116. [2024-11-27 20:25:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30116 states, 27519 states have (on average 1.6267306224790146) internal successors, (44766), 28200 states have internal predecessors, (44766), 1388 states have call successors, (1388), 515 states have call predecessors, (1388), 1207 states have return successors, (5551), 1464 states have call predecessors, (5551), 1385 states have call successors, (5551) [2024-11-27 20:25:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30116 states to 30116 states and 51705 transitions. [2024-11-27 20:25:54,838 INFO L78 Accepts]: Start accepts. Automaton has 30116 states and 51705 transitions. Word has length 166 [2024-11-27 20:25:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:54,838 INFO L471 AbstractCegarLoop]: Abstraction has 30116 states and 51705 transitions. [2024-11-27 20:25:54,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 30116 states and 51705 transitions. [2024-11-27 20:25:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:25:54,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:54,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:54,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 20:25:54,845 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:54,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:54,845 INFO L85 PathProgramCache]: Analyzing trace with hash -485533863, now seen corresponding path program 1 times [2024-11-27 20:25:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014199153] [2024-11-27 20:25:54,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014199153] [2024-11-27 20:25:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014199153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:25:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898584890] [2024-11-27 20:25:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:54,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:25:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:54,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:25:54,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:54,971 INFO L87 Difference]: Start difference. First operand 30116 states and 51705 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:25:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:59,877 INFO L93 Difference]: Finished difference Result 99086 states and 179264 transitions. [2024-11-27 20:25:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:25:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:25:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:00,131 INFO L225 Difference]: With dead ends: 99086 [2024-11-27 20:26:00,131 INFO L226 Difference]: Without dead ends: 70354 [2024-11-27 20:26:00,216 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 [2024-11-27 20:26:00,216 INFO L435 NwaCegarLoop]: 741 mSDtfsCounter, 1415 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:00,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 2980 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:26:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70354 states. [2024-11-27 20:26:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70354 to 65559. [2024-11-27 20:26:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65559 states, 60032 states have (on average 1.664412313432836) internal successors, (99918), 62107 states have internal predecessors, (99918), 2540 states have call successors, (2540), 899 states have call predecessors, (2540), 2985 states have return successors, (18991), 2680 states have call predecessors, (18991), 2537 states have call successors, (18991) [2024-11-27 20:26:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65559 states to 65559 states and 121449 transitions. [2024-11-27 20:26:04,962 INFO L78 Accepts]: Start accepts. Automaton has 65559 states and 121449 transitions. Word has length 166 [2024-11-27 20:26:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:04,963 INFO L471 AbstractCegarLoop]: Abstraction has 65559 states and 121449 transitions. [2024-11-27 20:26:04,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 65559 states and 121449 transitions. [2024-11-27 20:26:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 20:26:04,974 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:04,974 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] [2024-11-27 20:26:04,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:26:04,975 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:04,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1433585829, now seen corresponding path program 1 times [2024-11-27 20:26:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318765906] [2024-11-27 20:26:04,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318765906] [2024-11-27 20:26:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318765906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:26:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034733046] [2024-11-27 20:26:05,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:05,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:26:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:05,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:26:05,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:26:05,102 INFO L87 Difference]: Start difference. First operand 65559 states and 121449 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:26:15,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:15,884 INFO L93 Difference]: Finished difference Result 221325 states and 439174 transitions. [2024-11-27 20:26:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:26:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 5 states have internal predecessors, (155), 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 166 [2024-11-27 20:26:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted.