./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.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_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1 --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 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:34:34,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:34:34,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:34:34,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:34:34,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:34:34,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:34:34,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:34:34,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:34:34,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:34:34,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:34:34,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:34:34,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:34:34,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:34:34,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:34:34,464 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:34:34,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:34:34,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:34:34,465 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:34:34,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:34:34,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:34:34,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:34:34,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:34:34,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:34:34,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:34:34,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:34:34,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:34:34,468 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_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1 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 -> 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b [2024-12-02 11:34:34,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:34:34,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:34:34,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:34:34,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:34:34,687 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:34:34,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-12-02 11:34:37,262 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/data/4724b466e/f16f3bcca79b422196946181a0569875/FLAG086a8705f [2024-12-02 11:34:37,491 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:34:37,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-12-02 11:34:37,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/data/4724b466e/f16f3bcca79b422196946181a0569875/FLAG086a8705f [2024-12-02 11:34:37,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/data/4724b466e/f16f3bcca79b422196946181a0569875 [2024-12-02 11:34:37,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:34:37,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:34:37,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:34:37,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:34:37,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:34:37,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:34:37" (1/1) ... [2024-12-02 11:34:37,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a64afb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:37, skipping insertion in model container [2024-12-02 11:34:37,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:34:37" (1/1) ... [2024-12-02 11:34:37,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:34:37,993 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_f7fdc545-5f20-4693-a9a1-08750ca70d9f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[911,924] [2024-12-02 11:34:38,047 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_f7fdc545-5f20-4693-a9a1-08750ca70d9f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[8416,8429] [2024-12-02 11:34:38,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:34:38,116 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:34:38,124 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[911,924] [2024-12-02 11:34:38,146 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_f7fdc545-5f20-4693-a9a1-08750ca70d9f/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[8416,8429] [2024-12-02 11:34:38,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:34:38,198 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:34:38,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38 WrapperNode [2024-12-02 11:34:38,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:34:38,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:34:38,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:34:38,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:34:38,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,248 INFO L138 Inliner]: procedures = 67, calls = 80, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 739 [2024-12-02 11:34:38,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:34:38,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:34:38,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:34:38,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:34:38,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,274 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]. [2024-12-02 11:34:38,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:34:38,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:34:38,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:34:38,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:34:38,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (1/1) ... [2024-12-02 11:34:38,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:34:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:38,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:34:38,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fdc545-5f20-4693-a9a1-08750ca70d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-12-02 11:34:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-12-02 11:34:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-12-02 11:34:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-12-02 11:34:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-12-02 11:34:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-12-02 11:34:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-12-02 11:34:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:34:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-12-02 11:34:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-12-02 11:34:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-12-02 11:34:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-12-02 11:34:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:34:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:34:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-12-02 11:34:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-12-02 11:34:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-12-02 11:34:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-12-02 11:34:38,466 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:34:38,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:34:39,012 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-12-02 11:34:39,012 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-12-02 11:34:39,142 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2024-12-02 11:34:39,142 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:34:39,159 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:34:39,159 INFO L312 CfgBuilder]: Removed 26 assume(true) statements. [2024-12-02 11:34:39,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:34:39 BoogieIcfgContainer [2024-12-02 11:34:39,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:34:39,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:34:39,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:34:39,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:34:39,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:34:37" (1/3) ... [2024-12-02 11:34:39,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d5539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:34:39, skipping insertion in model container [2024-12-02 11:34:39,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:34:38" (2/3) ... [2024-12-02 11:34:39,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5d5539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:34:39, skipping insertion in model container [2024-12-02 11:34:39,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:34:39" (3/3) ... [2024-12-02 11:34:39,169 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-12-02 11:34:39,184 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:34:39,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_3.cil+token_ring.06.cil-1.c that has 16 procedures, 351 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2024-12-02 11:34:39,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:34:39,261 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;@7babc266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:34:39,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 11:34:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 297 states have (on average 1.612794612794613) internal successors, (479), 303 states have internal predecessors, (479), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-12-02 11:34:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:34:39,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:39,275 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] [2024-12-02 11:34:39,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:39,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 624986262, now seen corresponding path program 1 times [2024-12-02 11:34:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475765152] [2024-12-02 11:34:39,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475765152] [2024-12-02 11:34:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475765152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:39,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:34:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850289335] [2024-12-02 11:34:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:39,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:34:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:39,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:34:39,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:34:39,673 INFO L87 Difference]: Start difference. First operand has 351 states, 297 states have (on average 1.612794612794613) internal successors, (479), 303 states have internal predecessors, (479), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-12-02 11:34:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:40,466 INFO L93 Difference]: Finished difference Result 794 states and 1257 transitions. [2024-12-02 11:34:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:34:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 63 [2024-12-02 11:34:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:40,478 INFO L225 Difference]: With dead ends: 794 [2024-12-02 11:34:40,478 INFO L226 Difference]: Without dead ends: 455 [2024-12-02 11:34:40,482 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 [2024-12-02 11:34:40,483 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 397 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:40,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1138 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:34:40,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-12-02 11:34:40,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 448. [2024-12-02 11:34:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 373 states have (on average 1.5120643431635388) internal successors, (564), 380 states have internal predecessors, (564), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-12-02 11:34:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 667 transitions. [2024-12-02 11:34:40,556 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 667 transitions. Word has length 63 [2024-12-02 11:34:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:40,556 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 667 transitions. [2024-12-02 11:34:40,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-12-02 11:34:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 667 transitions. [2024-12-02 11:34:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:34:40,559 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:40,559 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] [2024-12-02 11:34:40,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:34:40,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:40,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1661532330, now seen corresponding path program 1 times [2024-12-02 11:34:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:40,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347448162] [2024-12-02 11:34:40,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347448162] [2024-12-02 11:34:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347448162] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799651898] [2024-12-02 11:34:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:40,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:40,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:40,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:40,745 INFO L87 Difference]: Start difference. First operand 448 states and 667 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-12-02 11:34:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:41,541 INFO L93 Difference]: Finished difference Result 803 states and 1170 transitions. [2024-12-02 11:34:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 63 [2024-12-02 11:34:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:41,546 INFO L225 Difference]: With dead ends: 803 [2024-12-02 11:34:41,546 INFO L226 Difference]: Without dead ends: 602 [2024-12-02 11:34:41,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:34:41,548 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 747 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:41,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1230 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:34:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-12-02 11:34:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 556. [2024-12-02 11:34:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 459 states have (on average 1.4945533769063182) internal successors, (686), 468 states have internal predecessors, (686), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2024-12-02 11:34:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 823 transitions. [2024-12-02 11:34:41,607 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 823 transitions. Word has length 63 [2024-12-02 11:34:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:41,608 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 823 transitions. [2024-12-02 11:34:41,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-12-02 11:34:41,608 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 823 transitions. [2024-12-02 11:34:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:34:41,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:41,611 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] [2024-12-02 11:34:41,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:34:41,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:41,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1677051048, now seen corresponding path program 1 times [2024-12-02 11:34:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545881025] [2024-12-02 11:34:41,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545881025] [2024-12-02 11:34:41,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545881025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:41,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:41,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:34:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004208391] [2024-12-02 11:34:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:41,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:41,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:41,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:41,687 INFO L87 Difference]: Start difference. First operand 556 states and 823 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-12-02 11:34:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:41,968 INFO L93 Difference]: Finished difference Result 1426 states and 2069 transitions. [2024-12-02 11:34:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:34:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2024-12-02 11:34:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:41,977 INFO L225 Difference]: With dead ends: 1426 [2024-12-02 11:34:41,977 INFO L226 Difference]: Without dead ends: 1123 [2024-12-02 11:34:41,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:41,979 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 605 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:41,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1184 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:34:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-12-02 11:34:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1106. [2024-12-02 11:34:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 899 states have (on average 1.439377085650723) internal successors, (1294), 916 states have internal predecessors, (1294), 124 states have call successors, (124), 71 states have call predecessors, (124), 81 states have return successors, (158), 122 states have call predecessors, (158), 120 states have call successors, (158) [2024-12-02 11:34:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1576 transitions. [2024-12-02 11:34:42,095 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1576 transitions. Word has length 63 [2024-12-02 11:34:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:42,095 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1576 transitions. [2024-12-02 11:34:42,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-12-02 11:34:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1576 transitions. [2024-12-02 11:34:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 11:34:42,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:42,098 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:42,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:34:42,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:42,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 697592935, now seen corresponding path program 1 times [2024-12-02 11:34:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751804919] [2024-12-02 11:34:42,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751804919] [2024-12-02 11:34:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751804919] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:42,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:42,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:42,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790088018] [2024-12-02 11:34:42,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:42,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:42,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:42,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:42,202 INFO L87 Difference]: Start difference. First operand 1106 states and 1576 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-12-02 11:34:42,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:42,920 INFO L93 Difference]: Finished difference Result 3513 states and 4956 transitions. [2024-12-02 11:34:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:34:42,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 64 [2024-12-02 11:34:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:42,928 INFO L225 Difference]: With dead ends: 3513 [2024-12-02 11:34:42,928 INFO L226 Difference]: Without dead ends: 1381 [2024-12-02 11:34:42,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:34:42,933 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 1476 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:42,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2247 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-12-02 11:34:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1031. [2024-12-02 11:34:43,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 824 states have (on average 1.4077669902912622) internal successors, (1160), 841 states have internal predecessors, (1160), 124 states have call successors, (124), 71 states have call predecessors, (124), 81 states have return successors, (149), 122 states have call predecessors, (149), 120 states have call successors, (149) [2024-12-02 11:34:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1433 transitions. [2024-12-02 11:34:43,014 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1433 transitions. Word has length 64 [2024-12-02 11:34:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:43,015 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1433 transitions. [2024-12-02 11:34:43,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2024-12-02 11:34:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1433 transitions. [2024-12-02 11:34:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 11:34:43,016 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:43,017 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] [2024-12-02 11:34:43,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:34:43,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:43,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1906397873, now seen corresponding path program 1 times [2024-12-02 11:34:43,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:43,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427724815] [2024-12-02 11:34:43,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427724815] [2024-12-02 11:34:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427724815] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:43,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:43,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719407673] [2024-12-02 11:34:43,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:43,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:43,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:43,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:43,092 INFO L87 Difference]: Start difference. First operand 1031 states and 1433 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 11:34:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:43,169 INFO L93 Difference]: Finished difference Result 1854 states and 2545 transitions. [2024-12-02 11:34:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:34:43,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2024-12-02 11:34:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:43,176 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 11:34:43,176 INFO L226 Difference]: Without dead ends: 1076 [2024-12-02 11:34:43,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:43,179 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2505 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 [2024-12-02 11:34:43,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2505 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:34:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-12-02 11:34:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2024-12-02 11:34:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 860 states have (on average 1.3906976744186046) internal successors, (1196), 877 states have internal predecessors, (1196), 124 states have call successors, (124), 71 states have call predecessors, (124), 90 states have return successors, (158), 131 states have call predecessors, (158), 120 states have call successors, (158) [2024-12-02 11:34:43,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1478 transitions. [2024-12-02 11:34:43,256 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1478 transitions. Word has length 65 [2024-12-02 11:34:43,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:43,257 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1478 transitions. [2024-12-02 11:34:43,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 11:34:43,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1478 transitions. [2024-12-02 11:34:43,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 11:34:43,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:43,258 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] [2024-12-02 11:34:43,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:34:43,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:43,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash -465341389, now seen corresponding path program 1 times [2024-12-02 11:34:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:43,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877490326] [2024-12-02 11:34:43,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877490326] [2024-12-02 11:34:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877490326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:34:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541679030] [2024-12-02 11:34:43,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:43,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:43,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:43,318 INFO L87 Difference]: Start difference. First operand 1076 states and 1478 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 11:34:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:43,815 INFO L93 Difference]: Finished difference Result 2743 states and 3732 transitions. [2024-12-02 11:34:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:34:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 65 [2024-12-02 11:34:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:43,823 INFO L225 Difference]: With dead ends: 2743 [2024-12-02 11:34:43,823 INFO L226 Difference]: Without dead ends: 1923 [2024-12-02 11:34:43,825 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 [2024-12-02 11:34:43,825 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 695 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:43,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 565 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2024-12-02 11:34:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1913. [2024-12-02 11:34:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1496 states have (on average 1.3455882352941178) internal successors, (2013), 1528 states have internal predecessors, (2013), 232 states have call successors, (232), 134 states have call predecessors, (232), 183 states have return successors, (359), 257 states have call predecessors, (359), 228 states have call successors, (359) [2024-12-02 11:34:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2604 transitions. [2024-12-02 11:34:43,905 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2604 transitions. Word has length 65 [2024-12-02 11:34:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:43,905 INFO L471 AbstractCegarLoop]: Abstraction has 1913 states and 2604 transitions. [2024-12-02 11:34:43,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 11:34:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2604 transitions. [2024-12-02 11:34:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 11:34:43,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:43,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:43,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:34:43,907 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:43,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1203203594, now seen corresponding path program 1 times [2024-12-02 11:34:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260320107] [2024-12-02 11:34:43,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260320107] [2024-12-02 11:34:43,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260320107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:43,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:43,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:34:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116734990] [2024-12-02 11:34:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:43,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:34:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:43,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:34:43,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:34:43,937 INFO L87 Difference]: Start difference. First operand 1913 states and 2604 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-12-02 11:34:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:44,024 INFO L93 Difference]: Finished difference Result 3426 states and 4716 transitions. [2024-12-02 11:34:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:34:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 66 [2024-12-02 11:34:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:44,028 INFO L225 Difference]: With dead ends: 3426 [2024-12-02 11:34:44,028 INFO L226 Difference]: Without dead ends: 233 [2024-12-02 11:34:44,032 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 [2024-12-02 11:34:44,033 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:44,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 489 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:34:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-12-02 11:34:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-12-02 11:34:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 204 states have (on average 1.5588235294117647) internal successors, (318), 206 states have internal predecessors, (318), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 11:34:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 360 transitions. [2024-12-02 11:34:44,042 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 360 transitions. Word has length 66 [2024-12-02 11:34:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:44,042 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 360 transitions. [2024-12-02 11:34:44,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-12-02 11:34:44,042 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 360 transitions. [2024-12-02 11:34:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:44,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:44,043 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] [2024-12-02 11:34:44,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:34:44,043 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:44,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1015937114, now seen corresponding path program 1 times [2024-12-02 11:34:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709122763] [2024-12-02 11:34:44,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:44,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:44,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709122763] [2024-12-02 11:34:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709122763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:44,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457116899] [2024-12-02 11:34:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:44,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:44,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:44,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:44,155 INFO L87 Difference]: Start difference. First operand 233 states and 360 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:44,698 INFO L93 Difference]: Finished difference Result 709 states and 1117 transitions. [2024-12-02 11:34:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:44,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:44,702 INFO L225 Difference]: With dead ends: 709 [2024-12-02 11:34:44,702 INFO L226 Difference]: Without dead ends: 491 [2024-12-02 11:34:44,703 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 [2024-12-02 11:34:44,704 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 651 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:44,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1956 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:34:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-12-02 11:34:44,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 459. [2024-12-02 11:34:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 405 states have (on average 1.5728395061728395) internal successors, (637), 409 states have internal predecessors, (637), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-12-02 11:34:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 720 transitions. [2024-12-02 11:34:44,731 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 720 transitions. Word has length 111 [2024-12-02 11:34:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:44,731 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 720 transitions. [2024-12-02 11:34:44,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 720 transitions. [2024-12-02 11:34:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:44,732 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:44,732 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] [2024-12-02 11:34:44,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:34:44,733 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:44,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:44,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1899446104, now seen corresponding path program 1 times [2024-12-02 11:34:44,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:44,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358377096] [2024-12-02 11:34:44,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:44,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:44,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358377096] [2024-12-02 11:34:44,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358377096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:44,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:44,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:44,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767141028] [2024-12-02 11:34:44,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:44,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:44,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:44,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:44,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:44,836 INFO L87 Difference]: Start difference. First operand 459 states and 720 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:45,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:45,379 INFO L93 Difference]: Finished difference Result 1386 states and 2196 transitions. [2024-12-02 11:34:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:45,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:45,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:45,383 INFO L225 Difference]: With dead ends: 1386 [2024-12-02 11:34:45,383 INFO L226 Difference]: Without dead ends: 944 [2024-12-02 11:34:45,384 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 [2024-12-02 11:34:45,384 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 647 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:45,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1849 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:34:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-12-02 11:34:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 901. [2024-12-02 11:34:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 801 states have (on average 1.575530586766542) internal successors, (1262), 809 states have internal predecessors, (1262), 69 states have call successors, (69), 25 states have call predecessors, (69), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-12-02 11:34:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1421 transitions. [2024-12-02 11:34:45,418 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1421 transitions. Word has length 111 [2024-12-02 11:34:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:45,419 INFO L471 AbstractCegarLoop]: Abstraction has 901 states and 1421 transitions. [2024-12-02 11:34:45,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1421 transitions. [2024-12-02 11:34:45,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:45,420 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:45,420 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] [2024-12-02 11:34:45,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:34:45,421 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:45,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1927946394, now seen corresponding path program 1 times [2024-12-02 11:34:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:45,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039527300] [2024-12-02 11:34:45,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:45,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:45,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039527300] [2024-12-02 11:34:45,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039527300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:45,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:45,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:45,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216252821] [2024-12-02 11:34:45,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:45,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:45,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:45,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:45,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:45,526 INFO L87 Difference]: Start difference. First operand 901 states and 1421 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:46,075 INFO L93 Difference]: Finished difference Result 2801 states and 4483 transitions. [2024-12-02 11:34:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:46,087 INFO L225 Difference]: With dead ends: 2801 [2024-12-02 11:34:46,087 INFO L226 Difference]: Without dead ends: 1917 [2024-12-02 11:34:46,090 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 [2024-12-02 11:34:46,091 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 642 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:46,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1840 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2024-12-02 11:34:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1853. [2024-12-02 11:34:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1655 states have (on average 1.5879154078549849) internal successors, (2628), 1677 states have internal predecessors, (2628), 129 states have call successors, (129), 49 states have call predecessors, (129), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-12-02 11:34:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2963 transitions. [2024-12-02 11:34:46,206 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2963 transitions. Word has length 111 [2024-12-02 11:34:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:46,206 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 2963 transitions. [2024-12-02 11:34:46,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2963 transitions. [2024-12-02 11:34:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:46,209 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:46,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:46,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:34:46,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:46,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:46,210 INFO L85 PathProgramCache]: Analyzing trace with hash 426438888, now seen corresponding path program 1 times [2024-12-02 11:34:46,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:46,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051065500] [2024-12-02 11:34:46,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051065500] [2024-12-02 11:34:46,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051065500] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:46,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:46,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:46,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312795024] [2024-12-02 11:34:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:46,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:46,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:46,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:46,357 INFO L87 Difference]: Start difference. First operand 1853 states and 2963 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:46,989 INFO L93 Difference]: Finished difference Result 5884 states and 9605 transitions. [2024-12-02 11:34:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:46,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:47,004 INFO L225 Difference]: With dead ends: 5884 [2024-12-02 11:34:47,004 INFO L226 Difference]: Without dead ends: 4048 [2024-12-02 11:34:47,008 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 [2024-12-02 11:34:47,009 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 637 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:47,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1738 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2024-12-02 11:34:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3945. [2024-12-02 11:34:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3945 states, 3533 states have (on average 1.607132748372488) internal successors, (5678), 3601 states have internal predecessors, (5678), 249 states have call successors, (249), 97 states have call predecessors, (249), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-12-02 11:34:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3945 states to 3945 states and 6461 transitions. [2024-12-02 11:34:47,173 INFO L78 Accepts]: Start accepts. Automaton has 3945 states and 6461 transitions. Word has length 111 [2024-12-02 11:34:47,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:47,173 INFO L471 AbstractCegarLoop]: Abstraction has 3945 states and 6461 transitions. [2024-12-02 11:34:47,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3945 states and 6461 transitions. [2024-12-02 11:34:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:47,176 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:47,176 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] [2024-12-02 11:34:47,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:34:47,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:47,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1991465178, now seen corresponding path program 1 times [2024-12-02 11:34:47,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:47,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654009138] [2024-12-02 11:34:47,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654009138] [2024-12-02 11:34:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654009138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209632730] [2024-12-02 11:34:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:47,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:47,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:47,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:47,289 INFO L87 Difference]: Start difference. First operand 3945 states and 6461 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:48,039 INFO L93 Difference]: Finished difference Result 12743 states and 21487 transitions. [2024-12-02 11:34:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:48,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:48,081 INFO L225 Difference]: With dead ends: 12743 [2024-12-02 11:34:48,081 INFO L226 Difference]: Without dead ends: 8815 [2024-12-02 11:34:48,092 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 [2024-12-02 11:34:48,093 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 631 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:48,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1891 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2024-12-02 11:34:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 8641. [2024-12-02 11:34:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8641 states, 7747 states have (on average 1.6305666709694076) internal successors, (12632), 7961 states have internal predecessors, (12632), 489 states have call successors, (489), 193 states have call predecessors, (489), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-12-02 11:34:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8641 states to 8641 states and 14695 transitions. [2024-12-02 11:34:48,790 INFO L78 Accepts]: Start accepts. Automaton has 8641 states and 14695 transitions. Word has length 111 [2024-12-02 11:34:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:48,790 INFO L471 AbstractCegarLoop]: Abstraction has 8641 states and 14695 transitions. [2024-12-02 11:34:48,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8641 states and 14695 transitions. [2024-12-02 11:34:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:48,799 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:48,799 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:48,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:34:48,800 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:48,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:48,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1532768552, now seen corresponding path program 1 times [2024-12-02 11:34:48,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:48,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279651986] [2024-12-02 11:34:48,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:48,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:48,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279651986] [2024-12-02 11:34:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279651986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:48,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086305086] [2024-12-02 11:34:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:48,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:48,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:48,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:48,936 INFO L87 Difference]: Start difference. First operand 8641 states and 14695 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:50,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:50,006 INFO L93 Difference]: Finished difference Result 28334 states and 50245 transitions. [2024-12-02 11:34:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:50,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:50,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:50,092 INFO L225 Difference]: With dead ends: 28334 [2024-12-02 11:34:50,092 INFO L226 Difference]: Without dead ends: 19710 [2024-12-02 11:34:50,116 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 [2024-12-02 11:34:50,116 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 626 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:50,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1875 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:34:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19710 states. [2024-12-02 11:34:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19710 to 19409. [2024-12-02 11:34:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19409 states, 17389 states have (on average 1.6556443728794066) internal successors, (28790), 18057 states have internal predecessors, (28790), 969 states have call successors, (969), 385 states have call predecessors, (969), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-12-02 11:34:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19409 states to 19409 states and 34949 transitions. [2024-12-02 11:34:51,388 INFO L78 Accepts]: Start accepts. Automaton has 19409 states and 34949 transitions. Word has length 111 [2024-12-02 11:34:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:51,388 INFO L471 AbstractCegarLoop]: Abstraction has 19409 states and 34949 transitions. [2024-12-02 11:34:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 19409 states and 34949 transitions. [2024-12-02 11:34:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:51,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:51,401 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] [2024-12-02 11:34:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:34:51,402 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 538074854, now seen corresponding path program 1 times [2024-12-02 11:34:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131665315] [2024-12-02 11:34:51,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:51,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:51,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131665315] [2024-12-02 11:34:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131665315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:51,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383878642] [2024-12-02 11:34:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:51,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:51,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:51,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:51,522 INFO L87 Difference]: Start difference. First operand 19409 states and 34949 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:54,020 INFO L93 Difference]: Finished difference Result 67513 states and 127972 transitions. [2024-12-02 11:34:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:34:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:54,259 INFO L225 Difference]: With dead ends: 67513 [2024-12-02 11:34:54,259 INFO L226 Difference]: Without dead ends: 48121 [2024-12-02 11:34:54,344 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 [2024-12-02 11:34:54,344 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 684 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:54,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1848 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:34:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48121 states. [2024-12-02 11:34:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48121 to 44397. [2024-12-02 11:34:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44397 states, 39703 states have (on average 1.681888018537642) internal successors, (66776), 41765 states have internal predecessors, (66776), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-12-02 11:34:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44397 states to 44397 states and 87143 transitions. [2024-12-02 11:34:56,785 INFO L78 Accepts]: Start accepts. Automaton has 44397 states and 87143 transitions. Word has length 111 [2024-12-02 11:34:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:56,785 INFO L471 AbstractCegarLoop]: Abstraction has 44397 states and 87143 transitions. [2024-12-02 11:34:56,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:34:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 44397 states and 87143 transitions. [2024-12-02 11:34:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:34:56,796 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:56,796 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] [2024-12-02 11:34:56,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 11:34:56,796 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:56,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash -48201368, now seen corresponding path program 1 times [2024-12-02 11:34:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:34:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311940404] [2024-12-02 11:34:56,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:56,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:34:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:56,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:34:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311940404] [2024-12-02 11:34:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311940404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:56,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:56,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188735964] [2024-12-02 11:34:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:56,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:34:56,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:56,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:56,910 INFO L87 Difference]: Start difference. First operand 44397 states and 87143 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:35:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:01,726 INFO L93 Difference]: Finished difference Result 151237 states and 321764 transitions. [2024-12-02 11:35:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:35:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:35:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:02,159 INFO L225 Difference]: With dead ends: 151237 [2024-12-02 11:35:02,159 INFO L226 Difference]: Without dead ends: 106857 [2024-12-02 11:35:02,270 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 [2024-12-02 11:35:02,270 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 656 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:02,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1816 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:35:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106857 states. [2024-12-02 11:35:08,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106857 to 101471. [2024-12-02 11:35:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101471 states, 90035 states have (on average 1.6966957294385516) internal successors, (152762), 96343 states have internal predecessors, (152762), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-12-02 11:35:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101471 states to 101471 states and 225993 transitions. [2024-12-02 11:35:09,507 INFO L78 Accepts]: Start accepts. Automaton has 101471 states and 225993 transitions. Word has length 111 [2024-12-02 11:35:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:35:09,507 INFO L471 AbstractCegarLoop]: Abstraction has 101471 states and 225993 transitions. [2024-12-02 11:35:09,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:35:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 101471 states and 225993 transitions. [2024-12-02 11:35:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:35:09,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:09,543 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] [2024-12-02 11:35:09,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:35:09,543 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:09,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1828281450, now seen corresponding path program 1 times [2024-12-02 11:35:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380657522] [2024-12-02 11:35:09,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380657522] [2024-12-02 11:35:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380657522] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:35:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107696477] [2024-12-02 11:35:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:09,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:35:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:09,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:35:09,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:35:09,672 INFO L87 Difference]: Start difference. First operand 101471 states and 225993 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:35:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:16,117 INFO L93 Difference]: Finished difference Result 235732 states and 564450 transitions. [2024-12-02 11:35:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:35:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:35:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:16,928 INFO L225 Difference]: With dead ends: 235732 [2024-12-02 11:35:16,928 INFO L226 Difference]: Without dead ends: 134276 [2024-12-02 11:35:17,145 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 [2024-12-02 11:35:17,145 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 460 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:17,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 652 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:35:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134276 states. [2024-12-02 11:35:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134276 to 101471. [2024-12-02 11:35:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101471 states, 90035 states have (on average 1.6938412839451324) internal successors, (152505), 96343 states have internal predecessors, (152505), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-12-02 11:35:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101471 states to 101471 states and 225736 transitions. [2024-12-02 11:35:33,411 INFO L78 Accepts]: Start accepts. Automaton has 101471 states and 225736 transitions. Word has length 111 [2024-12-02 11:35:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:35:33,412 INFO L471 AbstractCegarLoop]: Abstraction has 101471 states and 225736 transitions. [2024-12-02 11:35:33,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:35:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 101471 states and 225736 transitions. [2024-12-02 11:35:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:35:33,436 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:33,436 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] [2024-12-02 11:35:33,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:35:33,436 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:33,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -50849496, now seen corresponding path program 1 times [2024-12-02 11:35:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467379993] [2024-12-02 11:35:33,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:35:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:35:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:35:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467379993] [2024-12-02 11:35:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467379993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:35:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569334878] [2024-12-02 11:35:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:33,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:35:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:35:33,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:35:33,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:35:33,522 INFO L87 Difference]: Start difference. First operand 101471 states and 225736 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:35:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:44,481 INFO L93 Difference]: Finished difference Result 336473 states and 850690 transitions. [2024-12-02 11:35:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:35:44,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:35:44,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:45,708 INFO L225 Difference]: With dead ends: 336473 [2024-12-02 11:35:45,708 INFO L226 Difference]: Without dead ends: 235019 [2024-12-02 11:35:46,074 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 [2024-12-02 11:35:46,075 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 674 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:46,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1787 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:35:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235019 states. [2024-12-02 11:36:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235019 to 228355. [2024-12-02 11:36:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228355 states, 199189 states have (on average 1.6916345782146605) internal successors, (336955), 218363 states have internal predecessors, (336955), 6921 states have call successors, (6921), 3073 states have call predecessors, (6921), 22244 states have return successors, (270086), 7430 states have call predecessors, (270086), 6919 states have call successors, (270086) [2024-12-02 11:36:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228355 states to 228355 states and 613962 transitions. [2024-12-02 11:36:13,818 INFO L78 Accepts]: Start accepts. Automaton has 228355 states and 613962 transitions. Word has length 111 [2024-12-02 11:36:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:36:13,818 INFO L471 AbstractCegarLoop]: Abstraction has 228355 states and 613962 transitions. [2024-12-02 11:36:13,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:36:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 228355 states and 613962 transitions. [2024-12-02 11:36:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 11:36:13,881 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:36:13,881 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] [2024-12-02 11:36:13,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 11:36:13,882 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:36:13,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:36:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1274006698, now seen corresponding path program 1 times [2024-12-02 11:36:13,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:36:13,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515993797] [2024-12-02 11:36:13,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:36:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:36:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:36:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:36:14,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:36:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515993797] [2024-12-02 11:36:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515993797] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:36:14,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:36:14,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:36:14,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139440395] [2024-12-02 11:36:14,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:36:14,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:36:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:36:14,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:36:14,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:36:14,217 INFO L87 Difference]: Start difference. First operand 228355 states and 613962 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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) [2024-12-02 11:36:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:36:44,152 INFO L93 Difference]: Finished difference Result 751718 states and 2438148 transitions. [2024-12-02 11:36:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:36:44,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2024-12-02 11:36:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:36:47,935 INFO L225 Difference]: With dead ends: 751718 [2024-12-02 11:36:47,935 INFO L226 Difference]: Without dead ends: 523380 [2024-12-02 11:36:49,349 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 [2024-12-02 11:36:49,350 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 609 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:36:49,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1668 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:36:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523380 states. [2024-12-02 11:38:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523380 to 514157. [2024-12-02 11:38:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514157 states, 436665 states have (on average 1.6747964686888117) internal successors, (731325), 494693 states have internal predecessors, (731325), 13321 states have call successors, (13321), 6145 states have call predecessors, (13321), 64170 states have return successors, (1063942), 14342 states have call predecessors, (1063942), 13319 states have call successors, (1063942)