./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU --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 f9db8f562e00e8e2c77bd4109a87025a2d9cfdc1d504bc43872dc3be0602b46a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:39,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:39,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:39,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:39,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:39,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:39,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:39,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:39,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:39,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:39,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:39,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:39,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:39,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:39,938 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:39,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:39,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:39,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:39,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:39,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:39,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:39,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:39,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:39,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:39,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:39,948 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:39,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:39,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:39,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:39,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:39,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:39,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:39,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:39,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:39,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:39,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:39,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:39,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:39,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:39,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:39,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:39,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:39,955 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9db8f562e00e8e2c77bd4109a87025a2d9cfdc1d504bc43872dc3be0602b46a [2024-10-31 22:09:40,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:40,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:40,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:40,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:40,253 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:40,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c Unable to find full path for "g++" [2024-10-31 22:09:42,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:42,998 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:43,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c [2024-10-31 22:09:43,026 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/data/5dbcd7f24/afc789347cd147278ca61e0f2617b500/FLAG5faf3e5b5 [2024-10-31 22:09:43,224 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/data/5dbcd7f24/afc789347cd147278ca61e0f2617b500 [2024-10-31 22:09:43,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:43,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:43,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:43,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:43,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:43,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:43,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348454d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43, skipping insertion in model container [2024-10-31 22:09:43,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:43,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:43,529 WARN L251 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_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c[911,924] [2024-10-31 22:09:43,631 WARN L251 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_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c[8416,8429] [2024-10-31 22:09:43,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:43,853 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:43,869 WARN L251 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_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c[911,924] [2024-10-31 22:09:43,893 WARN L251 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_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c[8416,8429] [2024-10-31 22:09:43,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:43,989 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:43,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43 WrapperNode [2024-10-31 22:09:43,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:43,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:43,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:43,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:44,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,119 INFO L138 Inliner]: procedures = 75, calls = 91, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 986 [2024-10-31 22:09:44,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:44,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:44,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:44,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:44,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,194 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]. [2024-10-31 22:09:44,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,198 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:44,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:44,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:44,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:44,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (1/1) ... [2024-10-31 22:09:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:44,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:44,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4e3935f-fbb4-41b2-8278-1c95b1dd3acc/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 22:09:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 22:09:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-31 22:09:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-31 22:09:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-31 22:09:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-31 22:09:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-31 22:09:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-31 22:09:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-31 22:09:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-31 22:09:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-31 22:09:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-31 22:09:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-31 22:09:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-31 22:09:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-31 22:09:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-31 22:09:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-31 22:09:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-31 22:09:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-31 22:09:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-31 22:09:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-31 22:09:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-31 22:09:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-31 22:09:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-31 22:09:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-31 22:09:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-31 22:09:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-31 22:09:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-31 22:09:44,500 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:44,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:45,504 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-10-31 22:09:45,505 INFO L735 $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; [2024-10-31 22:09:45,751 INFO L? ?]: Removed 118 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:45,752 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:45,783 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:45,787 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-10-31 22:09:45,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:45 BoogieIcfgContainer [2024-10-31 22:09:45,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:45,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:45,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:45,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:45,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:43" (1/3) ... [2024-10-31 22:09:45,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811a956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:45, skipping insertion in model container [2024-10-31 22:09:45,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:43" (2/3) ... [2024-10-31 22:09:45,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811a956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:45, skipping insertion in model container [2024-10-31 22:09:45,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:45" (3/3) ... [2024-10-31 22:09:45,801 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-2.c [2024-10-31 22:09:45,820 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:45,820 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:09:45,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:45,929 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;@7caec219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:45,929 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:09:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 403 states have (on average 1.6129032258064515) internal successors, (650), 409 states have internal predecessors, (650), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-31 22:09:45,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:09:45,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:45,956 INFO L215 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] [2024-10-31 22:09:45,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:45,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1864126348, now seen corresponding path program 1 times [2024-10-31 22:09:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440062300] [2024-10-31 22:09:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:09:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:09:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:09:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:46,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:46,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440062300] [2024-10-31 22:09:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440062300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:46,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:09:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319893107] [2024-10-31 22:09:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:46,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:09:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:46,903 INFO L87 Difference]: Start difference. First operand has 460 states, 403 states have (on average 1.6129032258064515) internal successors, (650), 409 states have internal predecessors, (650), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:09:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:48,823 INFO L93 Difference]: Finished difference Result 1045 states and 1651 transitions. [2024-10-31 22:09:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:09:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 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 65 [2024-10-31 22:09:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:48,872 INFO L225 Difference]: With dead ends: 1045 [2024-10-31 22:09:48,872 INFO L226 Difference]: Without dead ends: 601 [2024-10-31 22:09:48,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:09:48,886 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 1164 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:48,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1719 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:09:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-10-31 22:09:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 562. [2024-10-31 22:09:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 485 states have (on average 1.5072164948453608) internal successors, (731), 491 states have internal predecessors, (731), 53 states have call successors, (53), 21 states have call predecessors, (53), 22 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2024-10-31 22:09:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 840 transitions. [2024-10-31 22:09:49,032 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 840 transitions. Word has length 65 [2024-10-31 22:09:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:49,034 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 840 transitions. [2024-10-31 22:09:49,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:09:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 840 transitions. [2024-10-31 22:09:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:09:49,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:49,041 INFO L215 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] [2024-10-31 22:09:49,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:49,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash -751952308, now seen corresponding path program 1 times [2024-10-31 22:09:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363682148] [2024-10-31 22:09:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:09:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:09:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:09:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:49,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363682148] [2024-10-31 22:09:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363682148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:49,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:49,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:09:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991431194] [2024-10-31 22:09:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:49,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:09:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:49,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:49,389 INFO L87 Difference]: Start difference. First operand 562 states and 840 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:09:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:51,391 INFO L93 Difference]: Finished difference Result 959 states and 1406 transitions. [2024-10-31 22:09:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:09:51,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 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 65 [2024-10-31 22:09:51,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:51,398 INFO L225 Difference]: With dead ends: 959 [2024-10-31 22:09:51,399 INFO L226 Difference]: Without dead ends: 750 [2024-10-31 22:09:51,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:09:51,401 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 1323 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:51,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 2376 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 22:09:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-10-31 22:09:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 674. [2024-10-31 22:09:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 575 states have (on average 1.4904347826086957) internal successors, (857), 583 states have internal predecessors, (857), 66 states have call successors, (66), 28 states have call predecessors, (66), 31 states have return successors, (77), 66 states have call predecessors, (77), 64 states have call successors, (77) [2024-10-31 22:09:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1000 transitions. [2024-10-31 22:09:51,474 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1000 transitions. Word has length 65 [2024-10-31 22:09:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:51,475 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1000 transitions. [2024-10-31 22:09:51,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:09:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1000 transitions. [2024-10-31 22:09:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-31 22:09:51,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:51,479 INFO L215 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] [2024-10-31 22:09:51,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:51,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:51,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1514428878, now seen corresponding path program 1 times [2024-10-31 22:09:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:51,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663760697] [2024-10-31 22:09:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:51,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:09:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:09:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:09:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663760697] [2024-10-31 22:09:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663760697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:51,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:09:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162212136] [2024-10-31 22:09:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:51,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:09:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:09:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:51,691 INFO L87 Difference]: Start difference. First operand 674 states and 1000 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:09:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:53,177 INFO L93 Difference]: Finished difference Result 1346 states and 1942 transitions. [2024-10-31 22:09:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:09:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 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 65 [2024-10-31 22:09:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:53,186 INFO L225 Difference]: With dead ends: 1346 [2024-10-31 22:09:53,187 INFO L226 Difference]: Without dead ends: 1031 [2024-10-31 22:09:53,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:09:53,193 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 1745 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:53,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 1515 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:09:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-10-31 22:09:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 955. [2024-10-31 22:09:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 801 states have (on average 1.453183520599251) internal successors, (1164), 813 states have internal predecessors, (1164), 96 states have call successors, (96), 49 states have call predecessors, (96), 56 states have return successors, (115), 96 states have call predecessors, (115), 94 states have call successors, (115) [2024-10-31 22:09:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1375 transitions. [2024-10-31 22:09:53,305 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1375 transitions. Word has length 65 [2024-10-31 22:09:53,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:53,305 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1375 transitions. [2024-10-31 22:09:53,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:09:53,306 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1375 transitions. [2024-10-31 22:09:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-31 22:09:53,308 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:53,309 INFO L215 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] [2024-10-31 22:09:53,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:09:53,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:53,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1119345987, now seen corresponding path program 1 times [2024-10-31 22:09:53,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:53,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901872627] [2024-10-31 22:09:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:09:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:09:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:09:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:53,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:53,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901872627] [2024-10-31 22:09:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901872627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:53,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:09:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535732963] [2024-10-31 22:09:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:53,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:09:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:09:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:09:53,535 INFO L87 Difference]: Start difference. First operand 955 states and 1375 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:09:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:55,292 INFO L93 Difference]: Finished difference Result 1623 states and 2302 transitions. [2024-10-31 22:09:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:09:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 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 66 [2024-10-31 22:09:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:55,303 INFO L225 Difference]: With dead ends: 1623 [2024-10-31 22:09:55,304 INFO L226 Difference]: Without dead ends: 1027 [2024-10-31 22:09:55,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:09:55,311 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 584 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:55,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 2742 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:09:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-10-31 22:09:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 970. [2024-10-31 22:09:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 813 states have (on average 1.4428044280442804) internal successors, (1173), 825 states have internal predecessors, (1173), 96 states have call successors, (96), 49 states have call predecessors, (96), 59 states have return successors, (118), 99 states have call predecessors, (118), 94 states have call successors, (118) [2024-10-31 22:09:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1387 transitions. [2024-10-31 22:09:55,409 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1387 transitions. Word has length 66 [2024-10-31 22:09:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:55,410 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1387 transitions. [2024-10-31 22:09:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:09:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1387 transitions. [2024-10-31 22:09:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-31 22:09:55,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:55,412 INFO L215 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] [2024-10-31 22:09:55,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:09:55,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:55,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2146262011, now seen corresponding path program 1 times [2024-10-31 22:09:55,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:55,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809701506] [2024-10-31 22:09:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:09:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:09:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:09:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809701506] [2024-10-31 22:09:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809701506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:09:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655124606] [2024-10-31 22:09:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:55,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:09:55,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:55,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:09:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:09:55,660 INFO L87 Difference]: Start difference. First operand 970 states and 1387 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:09:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:58,916 INFO L93 Difference]: Finished difference Result 3175 states and 4508 transitions. [2024-10-31 22:09:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-31 22:09:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 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 66 [2024-10-31 22:09:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:58,926 INFO L225 Difference]: With dead ends: 3175 [2024-10-31 22:09:58,927 INFO L226 Difference]: Without dead ends: 1333 [2024-10-31 22:09:58,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 22:09:58,934 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 2679 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:58,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2315 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-31 22:09:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2024-10-31 22:09:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1178. [2024-10-31 22:09:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 965 states have (on average 1.4062176165803109) internal successors, (1357), 981 states have internal predecessors, (1357), 126 states have call successors, (126), 70 states have call predecessors, (126), 85 states have return successors, (167), 130 states have call predecessors, (167), 124 states have call successors, (167) [2024-10-31 22:09:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1650 transitions. [2024-10-31 22:09:59,042 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1650 transitions. Word has length 66 [2024-10-31 22:09:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:59,042 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1650 transitions. [2024-10-31 22:09:59,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-31 22:09:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1650 transitions. [2024-10-31 22:09:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:09:59,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:59,045 INFO L215 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] [2024-10-31 22:09:59,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:09:59,045 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:59,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 131616625, now seen corresponding path program 1 times [2024-10-31 22:09:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639690109] [2024-10-31 22:09:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:09:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:09:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:09:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 22:09:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:09:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:59,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639690109] [2024-10-31 22:09:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639690109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:59,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:59,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:09:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854812067] [2024-10-31 22:09:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:59,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:09:59,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:09:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:09:59,239 INFO L87 Difference]: Start difference. First operand 1178 states and 1650 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:10:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:00,931 INFO L93 Difference]: Finished difference Result 2134 states and 2956 transitions. [2024-10-31 22:10:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:10:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 5 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 67 [2024-10-31 22:10:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:00,940 INFO L225 Difference]: With dead ends: 2134 [2024-10-31 22:10:00,940 INFO L226 Difference]: Without dead ends: 1315 [2024-10-31 22:10:00,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:10:00,946 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 581 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:00,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 2693 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:10:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-10-31 22:10:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1223. [2024-10-31 22:10:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 1001 states have (on average 1.3916083916083917) internal successors, (1393), 1017 states have internal predecessors, (1393), 126 states have call successors, (126), 70 states have call predecessors, (126), 94 states have return successors, (176), 139 states have call predecessors, (176), 124 states have call successors, (176) [2024-10-31 22:10:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1695 transitions. [2024-10-31 22:10:01,073 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1695 transitions. Word has length 67 [2024-10-31 22:10:01,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:01,074 INFO L471 AbstractCegarLoop]: Abstraction has 1223 states and 1695 transitions. [2024-10-31 22:10:01,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:10:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1695 transitions. [2024-10-31 22:10:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:10:01,075 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:01,075 INFO L215 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] [2024-10-31 22:10:01,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:01,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:01,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1517820019, now seen corresponding path program 1 times [2024-10-31 22:10:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280576198] [2024-10-31 22:10:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:10:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:10:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:10:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 22:10:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:10:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280576198] [2024-10-31 22:10:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280576198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:10:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348665220] [2024-10-31 22:10:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:01,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:10:01,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:10:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:01,316 INFO L87 Difference]: Start difference. First operand 1223 states and 1695 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:10:03,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:03,037 INFO L93 Difference]: Finished difference Result 2203 states and 2998 transitions. [2024-10-31 22:10:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 22:10:03,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 5 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 67 [2024-10-31 22:10:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:03,046 INFO L225 Difference]: With dead ends: 2203 [2024-10-31 22:10:03,047 INFO L226 Difference]: Without dead ends: 1426 [2024-10-31 22:10:03,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:10:03,050 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 1658 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:03,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1663 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:10:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2024-10-31 22:10:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1232. [2024-10-31 22:10:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1010 states have (on average 1.386138613861386) internal successors, (1400), 1024 states have internal predecessors, (1400), 127 states have call successors, (127), 71 states have call predecessors, (127), 93 states have return successors, (172), 140 states have call predecessors, (172), 125 states have call successors, (172) [2024-10-31 22:10:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1699 transitions. [2024-10-31 22:10:03,201 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1699 transitions. Word has length 67 [2024-10-31 22:10:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:03,202 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 1699 transitions. [2024-10-31 22:10:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:10:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1699 transitions. [2024-10-31 22:10:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:10:03,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:03,204 INFO L215 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] [2024-10-31 22:10:03,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:10:03,205 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:03,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1383806513, now seen corresponding path program 1 times [2024-10-31 22:10:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:03,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432435384] [2024-10-31 22:10:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:10:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:10:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:10:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 22:10:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:10:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:03,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432435384] [2024-10-31 22:10:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432435384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:03,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:10:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923711812] [2024-10-31 22:10:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:03,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:03,369 INFO L87 Difference]: Start difference. First operand 1232 states and 1699 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:10:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:04,578 INFO L93 Difference]: Finished difference Result 3117 states and 4221 transitions. [2024-10-31 22:10:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:10:04,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 5 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 67 [2024-10-31 22:10:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:04,590 INFO L225 Difference]: With dead ends: 3117 [2024-10-31 22:10:04,590 INFO L226 Difference]: Without dead ends: 2247 [2024-10-31 22:10:04,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:10:04,594 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 1289 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:04,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 1633 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:10:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2024-10-31 22:10:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2081. [2024-10-31 22:10:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 1664 states have (on average 1.3395432692307692) internal successors, (2229), 1691 states have internal predecessors, (2229), 231 states have call successors, (231), 135 states have call predecessors, (231), 184 states have return successors, (362), 261 states have call predecessors, (362), 229 states have call successors, (362) [2024-10-31 22:10:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2822 transitions. [2024-10-31 22:10:04,814 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2822 transitions. Word has length 67 [2024-10-31 22:10:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:04,815 INFO L471 AbstractCegarLoop]: Abstraction has 2081 states and 2822 transitions. [2024-10-31 22:10:04,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 22:10:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2822 transitions. [2024-10-31 22:10:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-31 22:10:04,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:04,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:04,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:10:04,818 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:04,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash -472803222, now seen corresponding path program 1 times [2024-10-31 22:10:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:04,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940100605] [2024-10-31 22:10:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:04,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:10:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:10:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-31 22:10:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 22:10:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 22:10:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-31 22:10:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940100605] [2024-10-31 22:10:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940100605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:10:04,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13962664] [2024-10-31 22:10:04,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:04,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:04,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:04,908 INFO L87 Difference]: Start difference. First operand 2081 states and 2822 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:10:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:05,784 INFO L93 Difference]: Finished difference Result 3804 states and 5178 transitions. [2024-10-31 22:10:05,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:05,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 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 68 [2024-10-31 22:10:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:05,791 INFO L225 Difference]: With dead ends: 3804 [2024-10-31 22:10:05,791 INFO L226 Difference]: Without dead ends: 339 [2024-10-31 22:10:05,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:10:05,800 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 1444 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:05,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 968 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:10:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-10-31 22:10:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2024-10-31 22:10:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 308 states have (on average 1.5487012987012987) internal successors, (477), 309 states have internal predecessors, (477), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:10:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 525 transitions. [2024-10-31 22:10:05,820 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 525 transitions. Word has length 68 [2024-10-31 22:10:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:05,820 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 525 transitions. [2024-10-31 22:10:05,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 22:10:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 525 transitions. [2024-10-31 22:10:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-31 22:10:05,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:05,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:05,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:10:05,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:05,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 90631762, now seen corresponding path program 1 times [2024-10-31 22:10:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:05,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788323618] [2024-10-31 22:10:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:05,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:05,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-31 22:10:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:10:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-31 22:10:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-31 22:10:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:06,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:06,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788323618] [2024-10-31 22:10:06,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788323618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:06,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446293385] [2024-10-31 22:10:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:06,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:06,045 INFO L87 Difference]: Start difference. First operand 339 states and 525 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:10:08,292 INFO L93 Difference]: Finished difference Result 790 states and 1246 transitions. [2024-10-31 22:10:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:08,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2024-10-31 22:10:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:10:08,300 INFO L225 Difference]: With dead ends: 790 [2024-10-31 22:10:08,300 INFO L226 Difference]: Without dead ends: 459 [2024-10-31 22:10:08,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:10:08,303 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 894 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:10:08,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 673 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:10:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-10-31 22:10:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 339. [2024-10-31 22:10:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 308 states have (on average 1.5454545454545454) internal successors, (476), 309 states have internal predecessors, (476), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:10:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 524 transitions. [2024-10-31 22:10:08,335 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 524 transitions. Word has length 156 [2024-10-31 22:10:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:10:08,336 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 524 transitions. [2024-10-31 22:10:08,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 22:10:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 524 transitions. [2024-10-31 22:10:08,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-31 22:10:08,338 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:08,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:10:08,339 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:08,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1840493872, now seen corresponding path program 1 times [2024-10-31 22:10:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272214662] [2024-10-31 22:10:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:08,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:10:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat