./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 bad4bd14ff0d6303c86b61698001b4d4d1f47b3200dad5c7d05f11b8899f8627 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:20:47,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:20:47,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:20:47,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:20:47,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:20:47,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:20:47,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:20:47,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:20:47,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:20:47,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:20:47,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:20:47,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:20:47,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:20:47,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:20:47,273 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:20:47,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:20:47,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:20:47,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:20:47,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:20:47,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:20:47,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:20:47,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:20:47,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:20:47,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:20:47,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:20:47,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:20:47,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:20:47,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:20:47,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:20:47,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:20:47,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:20:47,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:20:47,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:20:47,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:20:47,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:20:47,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:20:47,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:20:47,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:20:47,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:20:47,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:20:47,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:20:47,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:20:47,286 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad4bd14ff0d6303c86b61698001b4d4d1f47b3200dad5c7d05f11b8899f8627 [2024-11-18 16:20:47,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:20:47,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:20:47,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:20:47,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:20:47,544 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:20:47,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c [2024-11-18 16:20:49,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:20:49,275 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:20:49,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c [2024-11-18 16:20:49,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb20b8d3/edb8585b89e84f86b5ad38174ff8e42c/FLAG6b8f1d0d8 [2024-11-18 16:20:49,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb20b8d3/edb8585b89e84f86b5ad38174ff8e42c [2024-11-18 16:20:49,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:20:49,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:20:49,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:20:49,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:20:49,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:20:49,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:49" (1/1) ... [2024-11-18 16:20:49,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64691c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:49, skipping insertion in model container [2024-11-18 16:20:49,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:49" (1/1) ... [2024-11-18 16:20:49,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:20:49,894 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c[911,924] [2024-11-18 16:20:49,981 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c[8416,8429] [2024-11-18 16:20:50,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:20:50,035 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:20:50,050 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c[911,924] [2024-11-18 16:20:50,076 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-1.c[8416,8429] [2024-11-18 16:20:50,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:20:50,123 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:20:50,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50 WrapperNode [2024-11-18 16:20:50,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:20:50,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:20:50,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:20:50,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:20:50,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,195 INFO L138 Inliner]: procedures = 61, calls = 71, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 572 [2024-11-18 16:20:50,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:20:50,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:20:50,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:20:50,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:20:50,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,231 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 16:20:50,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:20:50,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:20:50,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:20:50,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:20:50,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (1/1) ... [2024-11-18 16:20:50,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:20:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:50,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 16:20:50,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 16:20:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:20:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:20:50,371 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:20:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:20:50,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:20:50,373 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:20:50,374 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:20:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:20:50,374 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:20:50,374 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:20:50,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:20:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:20:50,375 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:20:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:20:50,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:20:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:20:50,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:20:50,375 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:20:50,376 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:20:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:20:50,376 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:20:50,376 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:20:50,376 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:20:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:20:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:20:50,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:20:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:20:50,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:20:50,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:20:50,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:20:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:20:50,378 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:20:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:20:50,379 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:20:50,490 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:20:50,492 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:20:51,074 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-11-18 16:20:51,074 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; [2024-11-18 16:20:51,195 INFO L? ?]: Removed 80 outVars from TransFormulas that were not future-live. [2024-11-18 16:20:51,196 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:20:51,221 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:20:51,221 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 16:20:51,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:51 BoogieIcfgContainer [2024-11-18 16:20:51,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:20:51,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:20:51,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:20:51,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:20:51,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:20:49" (1/3) ... [2024-11-18 16:20:51,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddcb4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:51, skipping insertion in model container [2024-11-18 16:20:51,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:50" (2/3) ... [2024-11-18 16:20:51,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddcb4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:51, skipping insertion in model container [2024-11-18 16:20:51,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:51" (3/3) ... [2024-11-18 16:20:51,233 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-1.c [2024-11-18 16:20:51,249 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:20:51,249 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:20:51,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:20:51,339 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;@1ff486e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:20:51,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:20:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 233 states have (on average 1.5708154506437768) internal successors, (366), 241 states have internal predecessors, (366), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 16:20:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:51,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:51,359 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] [2024-11-18 16:20:51,360 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:51,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1547030886, now seen corresponding path program 1 times [2024-11-18 16:20:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351581931] [2024-11-18 16:20:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351581931] [2024-11-18 16:20:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351581931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:51,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:51,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986133929] [2024-11-18 16:20:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:51,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:51,972 INFO L87 Difference]: Start difference. First operand has 286 states, 233 states have (on average 1.5708154506437768) internal successors, (366), 241 states have internal predecessors, (366), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:52,711 INFO L93 Difference]: Finished difference Result 671 states and 1029 transitions. [2024-11-18 16:20:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:20:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:52,735 INFO L225 Difference]: With dead ends: 671 [2024-11-18 16:20:52,736 INFO L226 Difference]: Without dead ends: 394 [2024-11-18 16:20:52,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:52,745 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 341 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:52,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 941 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-18 16:20:52,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 387. [2024-11-18 16:20:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 315 states have (on average 1.4634920634920634) internal successors, (461), 322 states have internal predecessors, (461), 48 states have call successors, (48), 22 states have call predecessors, (48), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-11-18 16:20:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 558 transitions. [2024-11-18 16:20:52,822 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 558 transitions. Word has length 65 [2024-11-18 16:20:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:52,822 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 558 transitions. [2024-11-18 16:20:52,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:52,823 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 558 transitions. [2024-11-18 16:20:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:52,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:52,827 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] [2024-11-18 16:20:52,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:20:52,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:52,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1069047770, now seen corresponding path program 1 times [2024-11-18 16:20:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763328730] [2024-11-18 16:20:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763328730] [2024-11-18 16:20:53,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763328730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:53,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763030219] [2024-11-18 16:20:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:53,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:53,060 INFO L87 Difference]: Start difference. First operand 387 states and 558 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:53,804 INFO L93 Difference]: Finished difference Result 754 states and 1073 transitions. [2024-11-18 16:20:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:20:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:53,811 INFO L225 Difference]: With dead ends: 754 [2024-11-18 16:20:53,812 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 16:20:53,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:53,814 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 569 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:53,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1224 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 16:20:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 499. [2024-11-18 16:20:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 405 states have (on average 1.4493827160493826) internal successors, (587), 414 states have internal predecessors, (587), 61 states have call successors, (61), 29 states have call predecessors, (61), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2024-11-18 16:20:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 718 transitions. [2024-11-18 16:20:53,890 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 718 transitions. Word has length 65 [2024-11-18 16:20:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:53,890 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 718 transitions. [2024-11-18 16:20:53,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 718 transitions. [2024-11-18 16:20:53,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:53,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:53,901 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] [2024-11-18 16:20:53,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:20:53,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:53,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1197333416, now seen corresponding path program 1 times [2024-11-18 16:20:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835615691] [2024-11-18 16:20:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:54,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:54,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835615691] [2024-11-18 16:20:54,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835615691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:54,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:20:54,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260145073] [2024-11-18 16:20:54,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:54,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:20:54,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:20:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:20:54,004 INFO L87 Difference]: Start difference. First operand 499 states and 718 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:54,240 INFO L93 Difference]: Finished difference Result 1405 states and 2000 transitions. [2024-11-18 16:20:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-11-18 16:20:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:54,248 INFO L225 Difference]: With dead ends: 1405 [2024-11-18 16:20:54,248 INFO L226 Difference]: Without dead ends: 1090 [2024-11-18 16:20:54,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:20:54,252 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 497 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:54,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 971 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:20:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2024-11-18 16:20:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1067. [2024-11-18 16:20:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 863 states have (on average 1.4055619930475087) internal successors, (1213), 880 states have internal predecessors, (1213), 121 states have call successors, (121), 71 states have call predecessors, (121), 81 states have return successors, (155), 119 states have call predecessors, (155), 117 states have call successors, (155) [2024-11-18 16:20:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1489 transitions. [2024-11-18 16:20:54,324 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1489 transitions. Word has length 65 [2024-11-18 16:20:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:54,325 INFO L471 AbstractCegarLoop]: Abstraction has 1067 states and 1489 transitions. [2024-11-18 16:20:54,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1489 transitions. [2024-11-18 16:20:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:20:54,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:54,329 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] [2024-11-18 16:20:54,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:20:54,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:54,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -434334283, now seen corresponding path program 1 times [2024-11-18 16:20:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:54,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667294950] [2024-11-18 16:20:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:54,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667294950] [2024-11-18 16:20:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667294950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644764020] [2024-11-18 16:20:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:54,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:54,423 INFO L87 Difference]: Start difference. First operand 1067 states and 1489 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:54,499 INFO L93 Difference]: Finished difference Result 1970 states and 2753 transitions. [2024-11-18 16:20:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 16:20:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:54,506 INFO L225 Difference]: With dead ends: 1970 [2024-11-18 16:20:54,506 INFO L226 Difference]: Without dead ends: 1087 [2024-11-18 16:20:54,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:54,510 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 0 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:54,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1979 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-18 16:20:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2024-11-18 16:20:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 879 states have (on average 1.3924914675767919) internal successors, (1224), 896 states have internal predecessors, (1224), 121 states have call successors, (121), 71 states have call predecessors, (121), 85 states have return successors, (162), 123 states have call predecessors, (162), 117 states have call successors, (162) [2024-11-18 16:20:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1507 transitions. [2024-11-18 16:20:54,606 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1507 transitions. Word has length 66 [2024-11-18 16:20:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:54,607 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1507 transitions. [2024-11-18 16:20:54,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1507 transitions. [2024-11-18 16:20:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:20:54,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:54,610 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] [2024-11-18 16:20:54,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:20:54,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:54,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:54,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1463693581, now seen corresponding path program 1 times [2024-11-18 16:20:54,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535449955] [2024-11-18 16:20:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535449955] [2024-11-18 16:20:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535449955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:54,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:54,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271002866] [2024-11-18 16:20:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:54,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:54,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:54,691 INFO L87 Difference]: Start difference. First operand 1087 states and 1507 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:55,332 INFO L93 Difference]: Finished difference Result 3648 states and 5043 transitions. [2024-11-18 16:20:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 16:20:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2024-11-18 16:20:55,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:55,341 INFO L225 Difference]: With dead ends: 3648 [2024-11-18 16:20:55,341 INFO L226 Difference]: Without dead ends: 1383 [2024-11-18 16:20:55,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:55,350 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 1292 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:55,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1945 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:20:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2024-11-18 16:20:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1003. [2024-11-18 16:20:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 795 states have (on average 1.359748427672956) internal successors, (1081), 812 states have internal predecessors, (1081), 121 states have call successors, (121), 71 states have call predecessors, (121), 85 states have return successors, (150), 123 states have call predecessors, (150), 117 states have call successors, (150) [2024-11-18 16:20:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1352 transitions. [2024-11-18 16:20:55,450 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1352 transitions. Word has length 66 [2024-11-18 16:20:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:55,453 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1352 transitions. [2024-11-18 16:20:55,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1352 transitions. [2024-11-18 16:20:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:20:55,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:55,455 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] [2024-11-18 16:20:55,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:20:55,455 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:55,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:55,456 INFO L85 PathProgramCache]: Analyzing trace with hash 827821915, now seen corresponding path program 1 times [2024-11-18 16:20:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:55,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230753852] [2024-11-18 16:20:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230753852] [2024-11-18 16:20:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230753852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:55,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:55,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:20:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104052123] [2024-11-18 16:20:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:55,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:20:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:20:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:20:55,568 INFO L87 Difference]: Start difference. First operand 1003 states and 1352 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:56,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:56,236 INFO L93 Difference]: Finished difference Result 2110 states and 2826 transitions. [2024-11-18 16:20:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 16:20:56,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 67 [2024-11-18 16:20:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:56,240 INFO L225 Difference]: With dead ends: 2110 [2024-11-18 16:20:56,240 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 16:20:56,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:20:56,245 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 707 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:56,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1080 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 16:20:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-18 16:20:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.5) internal successors, (207), 140 states have internal predecessors, (207), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 16:20:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 243 transitions. [2024-11-18 16:20:56,259 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 243 transitions. Word has length 67 [2024-11-18 16:20:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:56,259 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 243 transitions. [2024-11-18 16:20:56,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 16:20:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 243 transitions. [2024-11-18 16:20:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:56,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:56,261 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] [2024-11-18 16:20:56,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:20:56,261 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:56,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 55024972, now seen corresponding path program 1 times [2024-11-18 16:20:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287031513] [2024-11-18 16:20:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287031513] [2024-11-18 16:20:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287031513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351978308] [2024-11-18 16:20:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:56,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:56,305 INFO L87 Difference]: Start difference. First operand 164 states and 243 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:56,317 INFO L93 Difference]: Finished difference Result 319 states and 473 transitions. [2024-11-18 16:20:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:56,320 INFO L225 Difference]: With dead ends: 319 [2024-11-18 16:20:56,320 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 16:20:56,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:56,323 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 234 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:56,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 242 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 16:20:56,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-18 16:20:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 140 states have internal predecessors, (206), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 16:20:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2024-11-18 16:20:56,333 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 80 [2024-11-18 16:20:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:56,333 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2024-11-18 16:20:56,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2024-11-18 16:20:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:56,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:56,338 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] [2024-11-18 16:20:56,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:20:56,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:56,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1853432818, now seen corresponding path program 1 times [2024-11-18 16:20:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100355724] [2024-11-18 16:20:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:56,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:56,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100355724] [2024-11-18 16:20:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100355724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941698333] [2024-11-18 16:20:56,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:56,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:56,431 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:56,693 INFO L93 Difference]: Finished difference Result 480 states and 718 transitions. [2024-11-18 16:20:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:56,697 INFO L225 Difference]: With dead ends: 480 [2024-11-18 16:20:56,697 INFO L226 Difference]: Without dead ends: 328 [2024-11-18 16:20:56,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:56,699 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 404 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:56,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 654 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:20:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-18 16:20:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 315. [2024-11-18 16:20:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 270 states have (on average 1.5074074074074073) internal successors, (407), 273 states have internal predecessors, (407), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-18 16:20:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 468 transitions. [2024-11-18 16:20:56,722 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 468 transitions. Word has length 80 [2024-11-18 16:20:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:56,722 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 468 transitions. [2024-11-18 16:20:56,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 468 transitions. [2024-11-18 16:20:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:56,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:56,726 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] [2024-11-18 16:20:56,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:20:56,727 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:56,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1200093962, now seen corresponding path program 1 times [2024-11-18 16:20:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179298803] [2024-11-18 16:20:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179298803] [2024-11-18 16:20:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179298803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417914982] [2024-11-18 16:20:56,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:56,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:56,847 INFO L87 Difference]: Start difference. First operand 315 states and 468 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:57,264 INFO L93 Difference]: Finished difference Result 805 states and 1207 transitions. [2024-11-18 16:20:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:57,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:57,268 INFO L225 Difference]: With dead ends: 805 [2024-11-18 16:20:57,268 INFO L226 Difference]: Without dead ends: 502 [2024-11-18 16:20:57,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:57,270 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 395 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:57,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1234 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-18 16:20:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 457. [2024-11-18 16:20:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 393 states have (on average 1.5012722646310432) internal successors, (590), 397 states have internal predecessors, (590), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-18 16:20:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 678 transitions. [2024-11-18 16:20:57,295 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 678 transitions. Word has length 80 [2024-11-18 16:20:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:57,296 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 678 transitions. [2024-11-18 16:20:57,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 678 transitions. [2024-11-18 16:20:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:57,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:57,297 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] [2024-11-18 16:20:57,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:20:57,298 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:57,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash -486085876, now seen corresponding path program 1 times [2024-11-18 16:20:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197071753] [2024-11-18 16:20:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:57,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197071753] [2024-11-18 16:20:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197071753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:57,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:57,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:57,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484433495] [2024-11-18 16:20:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:57,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:57,405 INFO L87 Difference]: Start difference. First operand 457 states and 678 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:57,827 INFO L93 Difference]: Finished difference Result 1247 states and 1868 transitions. [2024-11-18 16:20:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:57,833 INFO L225 Difference]: With dead ends: 1247 [2024-11-18 16:20:57,833 INFO L226 Difference]: Without dead ends: 802 [2024-11-18 16:20:57,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:57,835 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 390 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:57,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1218 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:20:57,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-18 16:20:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 754. [2024-11-18 16:20:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 650 states have (on average 1.5) internal successors, (975), 658 states have internal predecessors, (975), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-18 16:20:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1123 transitions. [2024-11-18 16:20:57,896 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1123 transitions. Word has length 80 [2024-11-18 16:20:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:57,897 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1123 transitions. [2024-11-18 16:20:57,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1123 transitions. [2024-11-18 16:20:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:57,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:57,899 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] [2024-11-18 16:20:57,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:20:57,900 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:57,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash -540478774, now seen corresponding path program 1 times [2024-11-18 16:20:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:57,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959933152] [2024-11-18 16:20:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959933152] [2024-11-18 16:20:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959933152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:58,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:58,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969787845] [2024-11-18 16:20:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:58,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:58,002 INFO L87 Difference]: Start difference. First operand 754 states and 1123 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:58,228 INFO L93 Difference]: Finished difference Result 1562 states and 2356 transitions. [2024-11-18 16:20:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:58,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:58,234 INFO L225 Difference]: With dead ends: 1562 [2024-11-18 16:20:58,235 INFO L226 Difference]: Without dead ends: 820 [2024-11-18 16:20:58,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:58,237 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 297 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:58,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 453 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:20:58,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-18 16:20:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 754. [2024-11-18 16:20:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 650 states have (on average 1.4923076923076923) internal successors, (970), 658 states have internal predecessors, (970), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-18 16:20:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1118 transitions. [2024-11-18 16:20:58,286 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1118 transitions. Word has length 80 [2024-11-18 16:20:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:58,286 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1118 transitions. [2024-11-18 16:20:58,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1118 transitions. [2024-11-18 16:20:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:58,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:58,288 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] [2024-11-18 16:20:58,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:20:58,289 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:58,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -957875380, now seen corresponding path program 1 times [2024-11-18 16:20:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922018033] [2024-11-18 16:20:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:58,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:58,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922018033] [2024-11-18 16:20:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922018033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:58,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:58,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:58,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744503310] [2024-11-18 16:20:58,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:58,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:58,398 INFO L87 Difference]: Start difference. First operand 754 states and 1118 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:58,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:58,987 INFO L93 Difference]: Finished difference Result 2266 states and 3393 transitions. [2024-11-18 16:20:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:58,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:58,998 INFO L225 Difference]: With dead ends: 2266 [2024-11-18 16:20:58,998 INFO L226 Difference]: Without dead ends: 1524 [2024-11-18 16:20:59,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:59,002 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 410 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:59,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1174 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-18 16:20:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1360. [2024-11-18 16:20:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1174 states have (on average 1.495741056218058) internal successors, (1756), 1196 states have internal predecessors, (1756), 111 states have call successors, (111), 55 states have call predecessors, (111), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2024-11-18 16:20:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2040 transitions. [2024-11-18 16:20:59,103 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2040 transitions. Word has length 80 [2024-11-18 16:20:59,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:59,104 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 2040 transitions. [2024-11-18 16:20:59,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2040 transitions. [2024-11-18 16:20:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:59,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:59,106 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] [2024-11-18 16:20:59,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:20:59,107 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:59,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash -278603126, now seen corresponding path program 1 times [2024-11-18 16:20:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:59,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060493634] [2024-11-18 16:20:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:59,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:59,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:59,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060493634] [2024-11-18 16:20:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060493634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:59,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475871827] [2024-11-18 16:20:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:59,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:59,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:59,189 INFO L87 Difference]: Start difference. First operand 1360 states and 2040 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:59,445 INFO L93 Difference]: Finished difference Result 2824 states and 4292 transitions. [2024-11-18 16:20:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:20:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:59,455 INFO L225 Difference]: With dead ends: 2824 [2024-11-18 16:20:59,456 INFO L226 Difference]: Without dead ends: 1476 [2024-11-18 16:20:59,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:59,461 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 296 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:59,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 423 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:20:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2024-11-18 16:20:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1360. [2024-11-18 16:20:59,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1174 states have (on average 1.4880749574105623) internal successors, (1747), 1196 states have internal predecessors, (1747), 111 states have call successors, (111), 55 states have call predecessors, (111), 74 states have return successors, (173), 116 states have call predecessors, (173), 109 states have call successors, (173) [2024-11-18 16:20:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2031 transitions. [2024-11-18 16:20:59,591 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2031 transitions. Word has length 80 [2024-11-18 16:20:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:59,591 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 2031 transitions. [2024-11-18 16:20:59,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:20:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2031 transitions. [2024-11-18 16:20:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:20:59,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:59,594 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] [2024-11-18 16:20:59,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:20:59,594 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:59,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1682971532, now seen corresponding path program 1 times [2024-11-18 16:20:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840276365] [2024-11-18 16:20:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:59,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840276365] [2024-11-18 16:20:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840276365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17766434] [2024-11-18 16:20:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:59,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:59,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:59,706 INFO L87 Difference]: Start difference. First operand 1360 states and 2031 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:00,271 INFO L93 Difference]: Finished difference Result 4016 states and 6070 transitions. [2024-11-18 16:21:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:21:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:00,286 INFO L225 Difference]: With dead ends: 4016 [2024-11-18 16:21:00,286 INFO L226 Difference]: Without dead ends: 2668 [2024-11-18 16:21:00,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:21:00,290 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 375 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:00,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1129 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:21:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2024-11-18 16:21:00,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2569. [2024-11-18 16:21:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 2205 states have (on average 1.4798185941043085) internal successors, (3263), 2273 states have internal predecessors, (3263), 195 states have call successors, (195), 103 states have call predecessors, (195), 168 states have return successors, (449), 208 states have call predecessors, (449), 193 states have call successors, (449) [2024-11-18 16:21:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3907 transitions. [2024-11-18 16:21:00,507 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3907 transitions. Word has length 80 [2024-11-18 16:21:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:00,507 INFO L471 AbstractCegarLoop]: Abstraction has 2569 states and 3907 transitions. [2024-11-18 16:21:00,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3907 transitions. [2024-11-18 16:21:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:00,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:00,511 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] [2024-11-18 16:21:00,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:21:00,512 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:00,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2051295986, now seen corresponding path program 1 times [2024-11-18 16:21:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994511291] [2024-11-18 16:21:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:00,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994511291] [2024-11-18 16:21:00,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994511291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:00,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457985239] [2024-11-18 16:21:00,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:00,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:00,592 INFO L87 Difference]: Start difference. First operand 2569 states and 3907 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:00,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:00,752 INFO L93 Difference]: Finished difference Result 5176 states and 7951 transitions. [2024-11-18 16:21:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:00,772 INFO L225 Difference]: With dead ends: 5176 [2024-11-18 16:21:00,773 INFO L226 Difference]: Without dead ends: 2620 [2024-11-18 16:21:00,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:00,782 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:00,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 942 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2024-11-18 16:21:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2620. [2024-11-18 16:21:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2256 states have (on average 1.4689716312056738) internal successors, (3314), 2324 states have internal predecessors, (3314), 195 states have call successors, (195), 103 states have call predecessors, (195), 168 states have return successors, (449), 208 states have call predecessors, (449), 193 states have call successors, (449) [2024-11-18 16:21:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3958 transitions. [2024-11-18 16:21:01,001 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3958 transitions. Word has length 80 [2024-11-18 16:21:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:01,002 INFO L471 AbstractCegarLoop]: Abstraction has 2620 states and 3958 transitions. [2024-11-18 16:21:01,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3958 transitions. [2024-11-18 16:21:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:01,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:01,006 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] [2024-11-18 16:21:01,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:21:01,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:01,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1762591052, now seen corresponding path program 1 times [2024-11-18 16:21:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503380019] [2024-11-18 16:21:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503380019] [2024-11-18 16:21:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503380019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:01,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:21:01,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104906864] [2024-11-18 16:21:01,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:01,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:21:01,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:21:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:01,059 INFO L87 Difference]: Start difference. First operand 2620 states and 3958 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:01,455 INFO L93 Difference]: Finished difference Result 7748 states and 11771 transitions. [2024-11-18 16:21:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:21:01,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:01,512 INFO L225 Difference]: With dead ends: 7748 [2024-11-18 16:21:01,512 INFO L226 Difference]: Without dead ends: 5141 [2024-11-18 16:21:01,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:01,522 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 417 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:01,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 815 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:21:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2024-11-18 16:21:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 5103. [2024-11-18 16:21:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 4399 states have (on average 1.4648783814503297) internal successors, (6444), 4533 states have internal predecessors, (6444), 367 states have call successors, (367), 205 states have call predecessors, (367), 336 states have return successors, (862), 380 states have call predecessors, (862), 365 states have call successors, (862) [2024-11-18 16:21:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 7673 transitions. [2024-11-18 16:21:02,005 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 7673 transitions. Word has length 80 [2024-11-18 16:21:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:02,005 INFO L471 AbstractCegarLoop]: Abstraction has 5103 states and 7673 transitions. [2024-11-18 16:21:02,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 7673 transitions. [2024-11-18 16:21:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:02,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:02,010 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] [2024-11-18 16:21:02,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:21:02,010 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:02,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1099541525, now seen corresponding path program 1 times [2024-11-18 16:21:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:02,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916016298] [2024-11-18 16:21:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:02,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:02,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:02,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916016298] [2024-11-18 16:21:02,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916016298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:02,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077843561] [2024-11-18 16:21:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:02,104 INFO L87 Difference]: Start difference. First operand 5103 states and 7673 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:02,438 INFO L93 Difference]: Finished difference Result 10244 states and 15553 transitions. [2024-11-18 16:21:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:02,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:02,469 INFO L225 Difference]: With dead ends: 10244 [2024-11-18 16:21:02,473 INFO L226 Difference]: Without dead ends: 5154 [2024-11-18 16:21:02,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:02,491 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:02,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 942 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2024-11-18 16:21:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 5154. [2024-11-18 16:21:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 4450 states have (on average 1.4557303370786516) internal successors, (6478), 4584 states have internal predecessors, (6478), 367 states have call successors, (367), 205 states have call predecessors, (367), 336 states have return successors, (862), 380 states have call predecessors, (862), 365 states have call successors, (862) [2024-11-18 16:21:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7707 transitions. [2024-11-18 16:21:02,886 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7707 transitions. Word has length 80 [2024-11-18 16:21:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:02,887 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 7707 transitions. [2024-11-18 16:21:02,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7707 transitions. [2024-11-18 16:21:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:02,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:02,890 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] [2024-11-18 16:21:02,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:21:02,891 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:02,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1146037929, now seen corresponding path program 1 times [2024-11-18 16:21:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:02,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135531400] [2024-11-18 16:21:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135531400] [2024-11-18 16:21:02,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135531400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:02,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709625795] [2024-11-18 16:21:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:02,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:02,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:02,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:02,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:02,947 INFO L87 Difference]: Start difference. First operand 5154 states and 7707 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:03,269 INFO L93 Difference]: Finished difference Result 10397 states and 15689 transitions. [2024-11-18 16:21:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:03,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:03,309 INFO L225 Difference]: With dead ends: 10397 [2024-11-18 16:21:03,309 INFO L226 Difference]: Without dead ends: 5256 [2024-11-18 16:21:03,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:03,325 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:03,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 942 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2024-11-18 16:21:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 5256. [2024-11-18 16:21:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 4552 states have (on average 1.445518453427065) internal successors, (6580), 4686 states have internal predecessors, (6580), 367 states have call successors, (367), 205 states have call predecessors, (367), 336 states have return successors, (862), 380 states have call predecessors, (862), 365 states have call successors, (862) [2024-11-18 16:21:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 7809 transitions. [2024-11-18 16:21:03,822 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 7809 transitions. Word has length 80 [2024-11-18 16:21:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:03,822 INFO L471 AbstractCegarLoop]: Abstraction has 5256 states and 7809 transitions. [2024-11-18 16:21:03,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 7809 transitions. [2024-11-18 16:21:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:03,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:03,826 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] [2024-11-18 16:21:03,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:21:03,827 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:03,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 116678631, now seen corresponding path program 1 times [2024-11-18 16:21:03,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:03,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181439442] [2024-11-18 16:21:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:03,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181439442] [2024-11-18 16:21:03,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181439442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:03,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:03,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:21:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442883276] [2024-11-18 16:21:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:03,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:21:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:21:03,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:03,891 INFO L87 Difference]: Start difference. First operand 5256 states and 7809 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:04,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:04,716 INFO L93 Difference]: Finished difference Result 15619 states and 23338 transitions. [2024-11-18 16:21:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:21:04,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:04,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:04,770 INFO L225 Difference]: With dead ends: 15619 [2024-11-18 16:21:04,770 INFO L226 Difference]: Without dead ends: 10376 [2024-11-18 16:21:04,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:04,793 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 429 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:04,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 815 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:21:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10376 states. [2024-11-18 16:21:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10376 to 10304. [2024-11-18 16:21:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 8921 states have (on average 1.43907633673355) internal successors, (12838), 9187 states have internal predecessors, (12838), 710 states have call successors, (710), 409 states have call predecessors, (710), 672 states have return successors, (1687), 723 states have call predecessors, (1687), 708 states have call successors, (1687) [2024-11-18 16:21:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 15235 transitions. [2024-11-18 16:21:05,607 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 15235 transitions. Word has length 80 [2024-11-18 16:21:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:05,608 INFO L471 AbstractCegarLoop]: Abstraction has 10304 states and 15235 transitions. [2024-11-18 16:21:05,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 15235 transitions. [2024-11-18 16:21:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:05,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:05,611 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] [2024-11-18 16:21:05,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:21:05,611 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:05,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1648137978, now seen corresponding path program 1 times [2024-11-18 16:21:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:05,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767499079] [2024-11-18 16:21:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:05,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:05,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:05,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767499079] [2024-11-18 16:21:05,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767499079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:05,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:05,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988611166] [2024-11-18 16:21:05,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:05,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:05,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:05,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:05,674 INFO L87 Difference]: Start difference. First operand 10304 states and 15235 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:06,272 INFO L93 Difference]: Finished difference Result 20697 states and 30884 transitions. [2024-11-18 16:21:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:06,322 INFO L225 Difference]: With dead ends: 20697 [2024-11-18 16:21:06,322 INFO L226 Difference]: Without dead ends: 10406 [2024-11-18 16:21:06,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:06,352 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:06,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 942 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2024-11-18 16:21:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 10406. [2024-11-18 16:21:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10406 states, 9023 states have (on average 1.4303446747201596) internal successors, (12906), 9289 states have internal predecessors, (12906), 710 states have call successors, (710), 409 states have call predecessors, (710), 672 states have return successors, (1687), 723 states have call predecessors, (1687), 708 states have call successors, (1687) [2024-11-18 16:21:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10406 states to 10406 states and 15303 transitions. [2024-11-18 16:21:07,387 INFO L78 Accepts]: Start accepts. Automaton has 10406 states and 15303 transitions. Word has length 80 [2024-11-18 16:21:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:07,387 INFO L471 AbstractCegarLoop]: Abstraction has 10406 states and 15303 transitions. [2024-11-18 16:21:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 10406 states and 15303 transitions. [2024-11-18 16:21:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:07,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:07,392 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] [2024-11-18 16:21:07,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:21:07,392 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:07,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1373378364, now seen corresponding path program 1 times [2024-11-18 16:21:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235538124] [2024-11-18 16:21:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:07,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235538124] [2024-11-18 16:21:07,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235538124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:07,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:21:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237178793] [2024-11-18 16:21:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:07,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:21:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:21:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:07,532 INFO L87 Difference]: Start difference. First operand 10406 states and 15303 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:08,366 INFO L93 Difference]: Finished difference Result 11982 states and 17589 transitions. [2024-11-18 16:21:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:21:08,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:08,398 INFO L225 Difference]: With dead ends: 11982 [2024-11-18 16:21:08,398 INFO L226 Difference]: Without dead ends: 6174 [2024-11-18 16:21:08,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:21:08,412 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 382 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:08,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 826 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:21:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2024-11-18 16:21:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 5806. [2024-11-18 16:21:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 5059 states have (on average 1.4069974303221982) internal successors, (7118), 5141 states have internal predecessors, (7118), 426 states have call successors, (426), 241 states have call predecessors, (426), 320 states have return successors, (659), 431 states have call predecessors, (659), 424 states have call successors, (659) [2024-11-18 16:21:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 8203 transitions. [2024-11-18 16:21:08,777 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 8203 transitions. Word has length 80 [2024-11-18 16:21:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:08,778 INFO L471 AbstractCegarLoop]: Abstraction has 5806 states and 8203 transitions. [2024-11-18 16:21:08,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 8203 transitions. [2024-11-18 16:21:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:08,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:08,782 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] [2024-11-18 16:21:08,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:21:08,782 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:08,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 549849670, now seen corresponding path program 1 times [2024-11-18 16:21:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461858410] [2024-11-18 16:21:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:08,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461858410] [2024-11-18 16:21:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461858410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:08,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:08,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:21:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075626734] [2024-11-18 16:21:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:08,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:21:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:21:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:08,897 INFO L87 Difference]: Start difference. First operand 5806 states and 8203 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:09,552 INFO L93 Difference]: Finished difference Result 7166 states and 10169 transitions. [2024-11-18 16:21:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:21:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:09,574 INFO L225 Difference]: With dead ends: 7166 [2024-11-18 16:21:09,574 INFO L226 Difference]: Without dead ends: 3578 [2024-11-18 16:21:09,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:21:09,584 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 374 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:09,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 818 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:21:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2024-11-18 16:21:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3426. [2024-11-18 16:21:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2995 states have (on average 1.3989983305509182) internal successors, (4190), 3021 states have internal predecessors, (4190), 262 states have call successors, (262), 145 states have call predecessors, (262), 168 states have return successors, (315), 263 states have call predecessors, (315), 260 states have call successors, (315) [2024-11-18 16:21:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4767 transitions. [2024-11-18 16:21:09,941 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4767 transitions. Word has length 80 [2024-11-18 16:21:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:09,942 INFO L471 AbstractCegarLoop]: Abstraction has 3426 states and 4767 transitions. [2024-11-18 16:21:09,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4767 transitions. [2024-11-18 16:21:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:09,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:09,944 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] [2024-11-18 16:21:09,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:21:09,945 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:09,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:09,945 INFO L85 PathProgramCache]: Analyzing trace with hash 611889284, now seen corresponding path program 1 times [2024-11-18 16:21:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:09,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867600517] [2024-11-18 16:21:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:09,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867600517] [2024-11-18 16:21:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867600517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:10,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:10,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677022604] [2024-11-18 16:21:10,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:10,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:10,042 INFO L87 Difference]: Start difference. First operand 3426 states and 4767 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:10,376 INFO L93 Difference]: Finished difference Result 6838 states and 9590 transitions. [2024-11-18 16:21:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:21:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:10,434 INFO L225 Difference]: With dead ends: 6838 [2024-11-18 16:21:10,434 INFO L226 Difference]: Without dead ends: 3426 [2024-11-18 16:21:10,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:10,439 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 284 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:10,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 420 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:21:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2024-11-18 16:21:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3426. [2024-11-18 16:21:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 2995 states have (on average 1.3869782971619367) internal successors, (4154), 3021 states have internal predecessors, (4154), 262 states have call successors, (262), 145 states have call predecessors, (262), 168 states have return successors, (315), 263 states have call predecessors, (315), 260 states have call successors, (315) [2024-11-18 16:21:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4731 transitions. [2024-11-18 16:21:10,625 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4731 transitions. Word has length 80 [2024-11-18 16:21:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:10,625 INFO L471 AbstractCegarLoop]: Abstraction has 3426 states and 4731 transitions. [2024-11-18 16:21:10,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4731 transitions. [2024-11-18 16:21:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:10,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:10,627 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] [2024-11-18 16:21:10,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:21:10,627 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:10,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 752437894, now seen corresponding path program 1 times [2024-11-18 16:21:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040348268] [2024-11-18 16:21:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:10,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:10,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040348268] [2024-11-18 16:21:10,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040348268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:10,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:10,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:21:10,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446100076] [2024-11-18 16:21:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:10,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:21:10,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:21:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:10,732 INFO L87 Difference]: Start difference. First operand 3426 states and 4731 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:11,320 INFO L93 Difference]: Finished difference Result 5636 states and 7786 transitions. [2024-11-18 16:21:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:21:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:11,339 INFO L225 Difference]: With dead ends: 5636 [2024-11-18 16:21:11,340 INFO L226 Difference]: Without dead ends: 3296 [2024-11-18 16:21:11,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:21:11,347 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 391 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:11,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 789 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:21:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2024-11-18 16:21:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2856. [2024-11-18 16:21:11,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2503 states have (on average 1.3847383140231722) internal successors, (3466), 2515 states have internal predecessors, (3466), 222 states have call successors, (222), 121 states have call predecessors, (222), 130 states have return successors, (237), 221 states have call predecessors, (237), 220 states have call successors, (237) [2024-11-18 16:21:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3925 transitions. [2024-11-18 16:21:11,536 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3925 transitions. Word has length 80 [2024-11-18 16:21:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:11,536 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 3925 transitions. [2024-11-18 16:21:11,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3925 transitions. [2024-11-18 16:21:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:11,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:11,538 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] [2024-11-18 16:21:11,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:21:11,538 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:11,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash 618424388, now seen corresponding path program 1 times [2024-11-18 16:21:11,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664111228] [2024-11-18 16:21:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:11,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:11,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664111228] [2024-11-18 16:21:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664111228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:11,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:21:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527727110] [2024-11-18 16:21:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:11,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:21:11,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:21:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:11,628 INFO L87 Difference]: Start difference. First operand 2856 states and 3925 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:12,109 INFO L93 Difference]: Finished difference Result 7025 states and 9714 transitions. [2024-11-18 16:21:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:21:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:12,127 INFO L225 Difference]: With dead ends: 7025 [2024-11-18 16:21:12,127 INFO L226 Difference]: Without dead ends: 4182 [2024-11-18 16:21:12,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:21:12,136 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 334 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:12,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 465 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:21:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2024-11-18 16:21:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3944. [2024-11-18 16:21:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 3459 states have (on average 1.3489447817288234) internal successors, (4666), 3501 states have internal predecessors, (4666), 274 states have call successors, (274), 171 states have call predecessors, (274), 210 states have return successors, (406), 273 states have call predecessors, (406), 272 states have call successors, (406) [2024-11-18 16:21:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 5346 transitions. [2024-11-18 16:21:12,369 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 5346 transitions. Word has length 80 [2024-11-18 16:21:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:12,369 INFO L471 AbstractCegarLoop]: Abstraction has 3944 states and 5346 transitions. [2024-11-18 16:21:12,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 5346 transitions. [2024-11-18 16:21:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:12,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:12,371 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] [2024-11-18 16:21:12,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:21:12,371 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:12,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash 837279106, now seen corresponding path program 1 times [2024-11-18 16:21:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:12,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761192468] [2024-11-18 16:21:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:12,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761192468] [2024-11-18 16:21:12,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761192468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:12,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:12,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:21:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067682950] [2024-11-18 16:21:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:12,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:21:12,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:21:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:12,481 INFO L87 Difference]: Start difference. First operand 3944 states and 5346 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:13,121 INFO L93 Difference]: Finished difference Result 6963 states and 9434 transitions. [2024-11-18 16:21:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:21:13,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 16:21:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:13,139 INFO L225 Difference]: With dead ends: 6963 [2024-11-18 16:21:13,139 INFO L226 Difference]: Without dead ends: 4150 [2024-11-18 16:21:13,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:21:13,147 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 347 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:13,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 762 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:21:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2024-11-18 16:21:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3920. [2024-11-18 16:21:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3447 states have (on average 1.3466782709602554) internal successors, (4642), 3477 states have internal predecessors, (4642), 274 states have call successors, (274), 171 states have call predecessors, (274), 198 states have return successors, (367), 272 states have call predecessors, (367), 272 states have call successors, (367) [2024-11-18 16:21:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5283 transitions. [2024-11-18 16:21:13,404 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5283 transitions. Word has length 80 [2024-11-18 16:21:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:13,404 INFO L471 AbstractCegarLoop]: Abstraction has 3920 states and 5283 transitions. [2024-11-18 16:21:13,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:21:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5283 transitions. [2024-11-18 16:21:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 16:21:13,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:13,406 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] [2024-11-18 16:21:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 16:21:13,406 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:13,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1259980932, now seen corresponding path program 1 times [2024-11-18 16:21:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946259849] [2024-11-18 16:21:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:21:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946259849] [2024-11-18 16:21:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946259849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:21:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697298885] [2024-11-18 16:21:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:13,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:21:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:21:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:13,441 INFO L87 Difference]: Start difference. First operand 3920 states and 5283 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 16:21:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:13,760 INFO L93 Difference]: Finished difference Result 11406 states and 15424 transitions. [2024-11-18 16:21:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:21:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 80 [2024-11-18 16:21:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:13,798 INFO L225 Difference]: With dead ends: 11406 [2024-11-18 16:21:13,798 INFO L226 Difference]: Without dead ends: 7500 [2024-11-18 16:21:13,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:13,814 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 191 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:13,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 444 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2024-11-18 16:21:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7480. [2024-11-18 16:21:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7480 states, 6543 states have (on average 1.3220235366040043) internal successors, (8650), 6621 states have internal predecessors, (8650), 540 states have call successors, (540), 341 states have call predecessors, (540), 396 states have return successors, (725), 518 states have call predecessors, (725), 538 states have call successors, (725) [2024-11-18 16:21:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 9915 transitions. [2024-11-18 16:21:14,505 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 9915 transitions. Word has length 80 [2024-11-18 16:21:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:14,506 INFO L471 AbstractCegarLoop]: Abstraction has 7480 states and 9915 transitions. [2024-11-18 16:21:14,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-18 16:21:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 9915 transitions. [2024-11-18 16:21:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 16:21:14,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:14,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:14,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 16:21:14,512 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:14,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1483251247, now seen corresponding path program 1 times [2024-11-18 16:21:14,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:14,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72387723] [2024-11-18 16:21:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:14,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 16:21:14,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:14,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72387723] [2024-11-18 16:21:14,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72387723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:14,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:14,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:21:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656404611] [2024-11-18 16:21:14,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:14,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:21:14,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:21:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:14,630 INFO L87 Difference]: Start difference. First operand 7480 states and 9915 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:16,220 INFO L93 Difference]: Finished difference Result 22912 states and 30500 transitions. [2024-11-18 16:21:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:16,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 130 [2024-11-18 16:21:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:16,298 INFO L225 Difference]: With dead ends: 22912 [2024-11-18 16:21:16,298 INFO L226 Difference]: Without dead ends: 15448 [2024-11-18 16:21:16,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:16,330 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 310 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:16,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 646 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:21:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15448 states. [2024-11-18 16:21:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15448 to 15344. [2024-11-18 16:21:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15344 states, 13474 states have (on average 1.3060709514620752) internal successors, (17598), 13669 states have internal predecessors, (17598), 1037 states have call successors, (1037), 661 states have call predecessors, (1037), 832 states have return successors, (1675), 1015 states have call predecessors, (1675), 1035 states have call successors, (1675) [2024-11-18 16:21:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15344 states to 15344 states and 20310 transitions. [2024-11-18 16:21:17,906 INFO L78 Accepts]: Start accepts. Automaton has 15344 states and 20310 transitions. Word has length 130 [2024-11-18 16:21:17,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:17,907 INFO L471 AbstractCegarLoop]: Abstraction has 15344 states and 20310 transitions. [2024-11-18 16:21:17,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:17,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15344 states and 20310 transitions. [2024-11-18 16:21:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 16:21:17,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:17,914 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:17,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 16:21:17,915 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:17,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:17,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1971298353, now seen corresponding path program 1 times [2024-11-18 16:21:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:17,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728923629] [2024-11-18 16:21:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:17,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 16:21:17,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728923629] [2024-11-18 16:21:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728923629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:17,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:21:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035777586] [2024-11-18 16:21:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:17,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:21:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:21:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:17,949 INFO L87 Difference]: Start difference. First operand 15344 states and 20310 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:21:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:18,766 INFO L93 Difference]: Finished difference Result 27184 states and 35953 transitions. [2024-11-18 16:21:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:21:18,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 130 [2024-11-18 16:21:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:18,827 INFO L225 Difference]: With dead ends: 27184 [2024-11-18 16:21:18,827 INFO L226 Difference]: Without dead ends: 11856 [2024-11-18 16:21:18,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:18,862 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 229 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:18,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 236 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:18,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2024-11-18 16:21:19,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 11856. [2024-11-18 16:21:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11856 states, 10425 states have (on average 1.3040767386091128) internal successors, (13595), 10581 states have internal predecessors, (13595), 786 states have call successors, (786), 501 states have call predecessors, (786), 644 states have return successors, (1289), 774 states have call predecessors, (1289), 784 states have call successors, (1289) [2024-11-18 16:21:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11856 states to 11856 states and 15670 transitions. [2024-11-18 16:21:19,665 INFO L78 Accepts]: Start accepts. Automaton has 11856 states and 15670 transitions. Word has length 130 [2024-11-18 16:21:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:19,665 INFO L471 AbstractCegarLoop]: Abstraction has 11856 states and 15670 transitions. [2024-11-18 16:21:19,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:21:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11856 states and 15670 transitions. [2024-11-18 16:21:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 16:21:19,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:19,672 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:19,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 16:21:19,672 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:19,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash -724571478, now seen corresponding path program 1 times [2024-11-18 16:21:19,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005355291] [2024-11-18 16:21:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 16:21:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005355291] [2024-11-18 16:21:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005355291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:19,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:21:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649638529] [2024-11-18 16:21:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:19,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:21:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:21:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:19,779 INFO L87 Difference]: Start difference. First operand 11856 states and 15670 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:21,140 INFO L93 Difference]: Finished difference Result 35902 states and 47370 transitions. [2024-11-18 16:21:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 132 [2024-11-18 16:21:21,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:21,234 INFO L225 Difference]: With dead ends: 35902 [2024-11-18 16:21:21,234 INFO L226 Difference]: Without dead ends: 24062 [2024-11-18 16:21:21,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:21,265 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 300 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:21,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 516 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:21:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24062 states. [2024-11-18 16:21:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24062 to 24058. [2024-11-18 16:21:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24058 states, 21147 states have (on average 1.2932803707381662) internal successors, (27349), 21537 states have internal predecessors, (27349), 1522 states have call successors, (1522), 1001 states have call predecessors, (1522), 1388 states have return successors, (2713), 1520 states have call predecessors, (2713), 1520 states have call successors, (2713) [2024-11-18 16:21:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24058 states to 24058 states and 31584 transitions. [2024-11-18 16:21:22,658 INFO L78 Accepts]: Start accepts. Automaton has 24058 states and 31584 transitions. Word has length 132 [2024-11-18 16:21:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:22,659 INFO L471 AbstractCegarLoop]: Abstraction has 24058 states and 31584 transitions. [2024-11-18 16:21:22,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 24058 states and 31584 transitions. [2024-11-18 16:21:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 16:21:22,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:22,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:22,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 16:21:22,668 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:22,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1679294895, now seen corresponding path program 1 times [2024-11-18 16:21:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91726851] [2024-11-18 16:21:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 16:21:22,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:22,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91726851] [2024-11-18 16:21:22,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91726851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:22,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:21:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196991341] [2024-11-18 16:21:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:22,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:21:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:21:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:21:22,774 INFO L87 Difference]: Start difference. First operand 24058 states and 31584 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:25,714 INFO L93 Difference]: Finished difference Result 72268 states and 95120 transitions. [2024-11-18 16:21:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:21:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 134 [2024-11-18 16:21:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:25,917 INFO L225 Difference]: With dead ends: 72268 [2024-11-18 16:21:25,917 INFO L226 Difference]: Without dead ends: 48226 [2024-11-18 16:21:25,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:21:25,979 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 287 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:25,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 570 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:21:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48226 states. [2024-11-18 16:21:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48226 to 48078. [2024-11-18 16:21:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48078 states, 41936 states have (on average 1.286674933231591) internal successors, (53958), 42955 states have internal predecessors, (53958), 2993 states have call successors, (2993), 2001 states have call predecessors, (2993), 3148 states have return successors, (6265), 3123 states have call predecessors, (6265), 2991 states have call successors, (6265) [2024-11-18 16:21:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48078 states to 48078 states and 63216 transitions. [2024-11-18 16:21:29,486 INFO L78 Accepts]: Start accepts. Automaton has 48078 states and 63216 transitions. Word has length 134 [2024-11-18 16:21:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:29,488 INFO L471 AbstractCegarLoop]: Abstraction has 48078 states and 63216 transitions. [2024-11-18 16:21:29,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 16:21:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 48078 states and 63216 transitions. [2024-11-18 16:21:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 16:21:29,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:29,501 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:29,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 16:21:29,502 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:29,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1753838799, now seen corresponding path program 1 times [2024-11-18 16:21:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:29,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009287809] [2024-11-18 16:21:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 16:21:29,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:29,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009287809] [2024-11-18 16:21:29,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009287809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:29,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:29,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:21:29,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251789632] [2024-11-18 16:21:29,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:29,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:21:29,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:29,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:21:29,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:29,541 INFO L87 Difference]: Start difference. First operand 48078 states and 63216 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:21:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:21:32,405 INFO L93 Difference]: Finished difference Result 87144 states and 114689 transitions. [2024-11-18 16:21:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:21:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 134 [2024-11-18 16:21:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:32,593 INFO L225 Difference]: With dead ends: 87144 [2024-11-18 16:21:32,593 INFO L226 Difference]: Without dead ends: 39082 [2024-11-18 16:21:32,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:21:32,681 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 226 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:32,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 235 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:21:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39082 states. [2024-11-18 16:21:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39082 to 39082. [2024-11-18 16:21:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 34095 states have (on average 1.288634697169673) internal successors, (43936), 34953 states have internal predecessors, (43936), 2398 states have call successors, (2398), 1601 states have call predecessors, (2398), 2588 states have return successors, (5165), 2528 states have call predecessors, (5165), 2396 states have call successors, (5165) [2024-11-18 16:21:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 51499 transitions. [2024-11-18 16:21:35,758 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 51499 transitions. Word has length 134 [2024-11-18 16:21:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:35,758 INFO L471 AbstractCegarLoop]: Abstraction has 39082 states and 51499 transitions. [2024-11-18 16:21:35,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:21:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 51499 transitions. [2024-11-18 16:21:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 16:21:35,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:35,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:21:35,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-18 16:21:35,769 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -759522070, now seen corresponding path program 1 times [2024-11-18 16:21:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633465426] [2024-11-18 16:21:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 16:21:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633465426] [2024-11-18 16:21:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633465426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:21:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228240170] [2024-11-18 16:21:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:35,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:21:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:21:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:21:35,867 INFO L87 Difference]: Start difference. First operand 39082 states and 51499 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)