./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.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_2.cil-1+token_ring.14.cil.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 a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:20:00,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:20:00,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:20:00,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:20:00,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:20:00,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:20:00,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:20:00,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:20:00,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:20:00,227 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:20:00,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:20:00,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:20:00,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:20:00,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:20:00,229 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:20:00,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:20:00,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:20:00,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:20:00,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:20:00,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:20:00,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:20:00,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:20:00,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:20:00,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:20:00,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:20:00,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:20:00,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:20:00,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:20:00,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:20:00,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:20:00,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:20:00,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:20:00,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:20:00,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:20:00,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:20:00,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:20:00,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:20:00,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:20:00,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:20:00,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:20:00,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:20:00,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:20:00,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e [2024-11-18 16:20:00,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:20:00,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:20:00,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:20:00,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:20:00,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:20:00,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2024-11-18 16:20:01,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:20:02,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:20:02,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2024-11-18 16:20:02,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897a551c9/7c83e18374cb4e0c8761336b1f5815cc/FLAGdb9459fbb [2024-11-18 16:20:02,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897a551c9/7c83e18374cb4e0c8761336b1f5815cc [2024-11-18 16:20:02,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:20:02,277 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:20:02,278 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:20:02,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:20:02,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:20:02,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:02,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8c037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02, skipping insertion in model container [2024-11-18 16:20:02,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:02,358 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:20:02,567 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_2.cil-1+token_ring.14.cil.c[914,927] [2024-11-18 16:20:02,642 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_2.cil-1+token_ring.14.cil.c[7115,7128] [2024-11-18 16:20:02,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:20:02,753 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:20:02,767 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_2.cil-1+token_ring.14.cil.c[914,927] [2024-11-18 16:20:02,794 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_2.cil-1+token_ring.14.cil.c[7115,7128] [2024-11-18 16:20:02,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:20:02,914 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:20:02,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02 WrapperNode [2024-11-18 16:20:02,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:20:02,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:20:02,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:20:02,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:20:02,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:02,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:02,987 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1072 [2024-11-18 16:20:02,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:20:02,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:20:02,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:20:02,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:20:03,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,028 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 16:20:03,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:20:03,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:20:03,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:20:03,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:20:03,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (1/1) ... [2024-11-18 16:20:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:20:03,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:03,122 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 16:20:03,127 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 16:20:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:20:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:20:03,185 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:20:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:20:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:20:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:20:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:20:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:20:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:20:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:20:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:20:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:20:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:20:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:20:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:20:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:20:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:20:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:20:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:20:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:20:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:20:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:20:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:20:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:20:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:20:03,189 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:20:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:20:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:20:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:20:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:20:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:20:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:20:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:20:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:20:03,330 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:20:03,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:20:04,541 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-18 16:20:04,542 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:20:04,577 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:20:04,577 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-18 16:20:04,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:04 BoogieIcfgContainer [2024-11-18 16:20:04,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:20:04,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:20:04,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:20:04,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:20:04,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:20:02" (1/3) ... [2024-11-18 16:20:04,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4561f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:04, skipping insertion in model container [2024-11-18 16:20:04,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:20:02" (2/3) ... [2024-11-18 16:20:04,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4561f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:20:04, skipping insertion in model container [2024-11-18 16:20:04,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:20:04" (3/3) ... [2024-11-18 16:20:04,587 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2024-11-18 16:20:04,599 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:20:04,600 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:20:04,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:20:04,677 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;@6480ffbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:20:04,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:20:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 502 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 450 states have internal predecessors, (718), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 16:20:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:04,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:04,695 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 16:20:04,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:04,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2139663125, now seen corresponding path program 1 times [2024-11-18 16:20:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:04,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801945357] [2024-11-18 16:20:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:05,279 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 16:20:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801945357] [2024-11-18 16:20:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801945357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988866953] [2024-11-18 16:20:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:05,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:05,319 INFO L87 Difference]: Start difference. First operand has 502 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 450 states have internal predecessors, (718), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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 16:20:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:06,448 INFO L93 Difference]: Finished difference Result 1078 states and 1716 transitions. [2024-11-18 16:20:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:06,452 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 16:20:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:06,475 INFO L225 Difference]: With dead ends: 1078 [2024-11-18 16:20:06,476 INFO L226 Difference]: Without dead ends: 594 [2024-11-18 16:20:06,487 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 16:20:06,494 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 481 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:06,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1612 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:20:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-18 16:20:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 587. [2024-11-18 16:20:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 510 states have (on average 1.5156862745098039) internal successors, (773), 517 states have internal predecessors, (773), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2024-11-18 16:20:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 880 transitions. [2024-11-18 16:20:06,618 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 880 transitions. Word has length 65 [2024-11-18 16:20:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:06,619 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 880 transitions. [2024-11-18 16:20:06,619 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 16:20:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 880 transitions. [2024-11-18 16:20:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:06,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:06,623 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 16:20:06,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:20:06,624 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:06,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:06,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1735877174, now seen corresponding path program 1 times [2024-11-18 16:20:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:06,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386177359] [2024-11-18 16:20:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:06,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386177359] [2024-11-18 16:20:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386177359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:06,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:06,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433387204] [2024-11-18 16:20:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:06,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:06,843 INFO L87 Difference]: Start difference. First operand 587 states and 880 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 16:20:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:07,894 INFO L93 Difference]: Finished difference Result 904 states and 1311 transitions. [2024-11-18 16:20:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:07,895 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 16:20:07,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:07,901 INFO L225 Difference]: With dead ends: 904 [2024-11-18 16:20:07,901 INFO L226 Difference]: Without dead ends: 727 [2024-11-18 16:20:07,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:07,904 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1107 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:07,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1629 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 16:20:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-18 16:20:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 683. [2024-11-18 16:20:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 586 states have (on average 1.4965870307167235) internal successors, (877), 595 states have internal predecessors, (877), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2024-11-18 16:20:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1014 transitions. [2024-11-18 16:20:07,972 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1014 transitions. Word has length 65 [2024-11-18 16:20:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:07,973 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1014 transitions. [2024-11-18 16:20:07,973 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 16:20:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1014 transitions. [2024-11-18 16:20:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:07,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:07,980 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 16:20:07,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:20:07,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:07,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 530504012, now seen corresponding path program 1 times [2024-11-18 16:20:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:07,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844205372] [2024-11-18 16:20:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:08,097 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 16:20:08,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:08,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844205372] [2024-11-18 16:20:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844205372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078521726] [2024-11-18 16:20:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:08,102 INFO L87 Difference]: Start difference. First operand 683 states and 1014 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:08,185 INFO L93 Difference]: Finished difference Result 955 states and 1387 transitions. [2024-11-18 16:20:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:08,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:20:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:08,191 INFO L225 Difference]: With dead ends: 955 [2024-11-18 16:20:08,191 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 16:20:08,193 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 16:20:08,195 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 0 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:08,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3720 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 16:20:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2024-11-18 16:20:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 590 states have (on average 1.4898305084745762) internal successors, (879), 599 states have internal predecessors, (879), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2024-11-18 16:20:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1017 transitions. [2024-11-18 16:20:08,246 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1017 transitions. Word has length 65 [2024-11-18 16:20:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:08,247 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1017 transitions. [2024-11-18 16:20:08,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1017 transitions. [2024-11-18 16:20:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:08,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:08,251 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 16:20:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:20:08,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -498855286, now seen corresponding path program 1 times [2024-11-18 16:20:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140870866] [2024-11-18 16:20:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:08,364 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 16:20:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140870866] [2024-11-18 16:20:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140870866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136747872] [2024-11-18 16:20:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:08,367 INFO L87 Difference]: Start difference. First operand 688 states and 1017 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 16:20:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:09,048 INFO L93 Difference]: Finished difference Result 2707 states and 3794 transitions. [2024-11-18 16:20:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:09,049 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), 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 65 [2024-11-18 16:20:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:09,063 INFO L225 Difference]: With dead ends: 2707 [2024-11-18 16:20:09,065 INFO L226 Difference]: Without dead ends: 2435 [2024-11-18 16:20:09,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:20:09,071 INFO L432 NwaCegarLoop]: 957 mSDtfsCounter, 2036 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:09,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 2802 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:20:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2024-11-18 16:20:09,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2278. [2024-11-18 16:20:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1841 states have (on average 1.3709940249864205) internal successors, (2524), 1878 states have internal predecessors, (2524), 229 states have call successors, (229), 173 states have call predecessors, (229), 206 states have return successors, (343), 230 states have call predecessors, (343), 225 states have call successors, (343) [2024-11-18 16:20:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3096 transitions. [2024-11-18 16:20:09,254 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3096 transitions. Word has length 65 [2024-11-18 16:20:09,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:09,255 INFO L471 AbstractCegarLoop]: Abstraction has 2278 states and 3096 transitions. [2024-11-18 16:20:09,255 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), 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 16:20:09,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3096 transitions. [2024-11-18 16:20:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:09,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:09,257 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 16:20:09,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:20:09,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:09,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -905645856, now seen corresponding path program 1 times [2024-11-18 16:20:09,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:09,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501305838] [2024-11-18 16:20:09,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:09,351 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 16:20:09,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501305838] [2024-11-18 16:20:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501305838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:09,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:09,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907606796] [2024-11-18 16:20:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:09,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:09,355 INFO L87 Difference]: Start difference. First operand 2278 states and 3096 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:09,538 INFO L93 Difference]: Finished difference Result 4185 states and 5653 transitions. [2024-11-18 16:20:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:20:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:09,554 INFO L225 Difference]: With dead ends: 4185 [2024-11-18 16:20:09,554 INFO L226 Difference]: Without dead ends: 2323 [2024-11-18 16:20:09,559 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 16:20:09,561 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 0 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:09,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3720 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2024-11-18 16:20:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2323. [2024-11-18 16:20:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1877 states have (on average 1.3558870538092702) internal successors, (2545), 1914 states have internal predecessors, (2545), 229 states have call successors, (229), 173 states have call predecessors, (229), 215 states have return successors, (361), 239 states have call predecessors, (361), 225 states have call successors, (361) [2024-11-18 16:20:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3135 transitions. [2024-11-18 16:20:09,720 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3135 transitions. Word has length 65 [2024-11-18 16:20:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:09,722 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 3135 transitions. [2024-11-18 16:20:09,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:09,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3135 transitions. [2024-11-18 16:20:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:20:09,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:09,727 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 16:20:09,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:20:09,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:09,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash 480557538, now seen corresponding path program 1 times [2024-11-18 16:20:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351708613] [2024-11-18 16:20:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351708613] [2024-11-18 16:20:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351708613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:09,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:09,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:20:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374279047] [2024-11-18 16:20:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:09,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:20:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:20:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:20:09,788 INFO L87 Difference]: Start difference. First operand 2323 states and 3135 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:10,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:10,541 INFO L93 Difference]: Finished difference Result 6055 states and 8050 transitions. [2024-11-18 16:20:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:20:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:20:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:10,564 INFO L225 Difference]: With dead ends: 6055 [2024-11-18 16:20:10,564 INFO L226 Difference]: Without dead ends: 4151 [2024-11-18 16:20:10,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:10,572 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 1042 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:10,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 807 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:20:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2024-11-18 16:20:10,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 4147. [2024-11-18 16:20:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 3286 states have (on average 1.3064516129032258) internal successors, (4293), 3358 states have internal predecessors, (4293), 430 states have call successors, (430), 338 states have call predecessors, (430), 429 states have return successors, (755), 457 states have call predecessors, (755), 426 states have call successors, (755) [2024-11-18 16:20:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5478 transitions. [2024-11-18 16:20:10,850 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5478 transitions. Word has length 65 [2024-11-18 16:20:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:10,851 INFO L471 AbstractCegarLoop]: Abstraction has 4147 states and 5478 transitions. [2024-11-18 16:20:10,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:20:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5478 transitions. [2024-11-18 16:20:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:20:10,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:10,853 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 16:20:10,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:20:10,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:10,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1600082124, now seen corresponding path program 1 times [2024-11-18 16:20:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407905231] [2024-11-18 16:20:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:10,890 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 16:20:10,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407905231] [2024-11-18 16:20:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407905231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196979512] [2024-11-18 16:20:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:10,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:10,893 INFO L87 Difference]: Start difference. First operand 4147 states and 5478 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:11,226 INFO L93 Difference]: Finished difference Result 10281 states and 13545 transitions. [2024-11-18 16:20:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 16:20:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:11,301 INFO L225 Difference]: With dead ends: 10281 [2024-11-18 16:20:11,302 INFO L226 Difference]: Without dead ends: 6532 [2024-11-18 16:20:11,314 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 16:20:11,316 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 103 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:11,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1472 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2024-11-18 16:20:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6378. [2024-11-18 16:20:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 4989 states have (on average 1.288234115053117) internal successors, (6427), 5076 states have internal predecessors, (6427), 689 states have call successors, (689), 568 states have call predecessors, (689), 698 states have return successors, (1207), 740 states have call predecessors, (1207), 685 states have call successors, (1207) [2024-11-18 16:20:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 8323 transitions. [2024-11-18 16:20:11,784 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 8323 transitions. Word has length 66 [2024-11-18 16:20:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:11,785 INFO L471 AbstractCegarLoop]: Abstraction has 6378 states and 8323 transitions. [2024-11-18 16:20:11,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 8323 transitions. [2024-11-18 16:20:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:20:11,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:11,791 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:11,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:20:11,792 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:11,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash 979956139, now seen corresponding path program 1 times [2024-11-18 16:20:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556841236] [2024-11-18 16:20:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:20:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556841236] [2024-11-18 16:20:11,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556841236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:11,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:11,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:11,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758658253] [2024-11-18 16:20:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:11,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:11,850 INFO L87 Difference]: Start difference. First operand 6378 states and 8323 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:12,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:12,172 INFO L93 Difference]: Finished difference Result 8176 states and 10581 transitions. [2024-11-18 16:20:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:12,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-18 16:20:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:12,210 INFO L225 Difference]: With dead ends: 8176 [2024-11-18 16:20:12,210 INFO L226 Difference]: Without dead ends: 5426 [2024-11-18 16:20:12,220 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 16:20:12,222 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 711 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:12,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 852 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2024-11-18 16:20:12,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 3964. [2024-11-18 16:20:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3964 states, 3125 states have (on average 1.27968) internal successors, (3999), 3180 states have internal predecessors, (3999), 429 states have call successors, (429), 346 states have call predecessors, (429), 408 states have return successors, (646), 444 states have call predecessors, (646), 425 states have call successors, (646) [2024-11-18 16:20:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3964 states to 3964 states and 5074 transitions. [2024-11-18 16:20:12,570 INFO L78 Accepts]: Start accepts. Automaton has 3964 states and 5074 transitions. Word has length 73 [2024-11-18 16:20:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:12,571 INFO L471 AbstractCegarLoop]: Abstraction has 3964 states and 5074 transitions. [2024-11-18 16:20:12,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:20:12,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3964 states and 5074 transitions. [2024-11-18 16:20:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:20:12,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:12,574 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:12,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:20:12,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:12,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -478283520, now seen corresponding path program 1 times [2024-11-18 16:20:12,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:12,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199596119] [2024-11-18 16:20:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:12,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199596119] [2024-11-18 16:20:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199596119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:20:12,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714454157] [2024-11-18 16:20:12,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:12,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:20:12,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:20:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:20:12,652 INFO L87 Difference]: Start difference. First operand 3964 states and 5074 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:20:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:13,213 INFO L93 Difference]: Finished difference Result 5153 states and 6538 transitions. [2024-11-18 16:20:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:13,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-18 16:20:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:13,244 INFO L225 Difference]: With dead ends: 5153 [2024-11-18 16:20:13,245 INFO L226 Difference]: Without dead ends: 5150 [2024-11-18 16:20:13,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:13,249 INFO L432 NwaCegarLoop]: 755 mSDtfsCounter, 1398 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:13,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 844 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:20:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-11-18 16:20:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5040. [2024-11-18 16:20:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 3944 states have (on average 1.265973630831643) internal successors, (4993), 4012 states have internal predecessors, (4993), 555 states have call successors, (555), 460 states have call predecessors, (555), 539 states have return successors, (849), 574 states have call predecessors, (849), 552 states have call successors, (849) [2024-11-18 16:20:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 6397 transitions. [2024-11-18 16:20:13,771 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 6397 transitions. Word has length 73 [2024-11-18 16:20:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:13,771 INFO L471 AbstractCegarLoop]: Abstraction has 5040 states and 6397 transitions. [2024-11-18 16:20:13,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:20:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 6397 transitions. [2024-11-18 16:20:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:20:13,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:13,774 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:13,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:20:13,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:13,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:13,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1943349731, now seen corresponding path program 1 times [2024-11-18 16:20:13,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:13,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186068838] [2024-11-18 16:20:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:13,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:13,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186068838] [2024-11-18 16:20:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186068838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:20:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933664142] [2024-11-18 16:20:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:13,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:20:13,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:13,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:20:13,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:20:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:14,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:20:14,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:20:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:14,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:20:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933664142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:20:14,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:20:14,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:20:14,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309770967] [2024-11-18 16:20:14,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:20:14,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:20:14,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:14,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:20:14,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:20:14,459 INFO L87 Difference]: Start difference. First operand 5040 states and 6397 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:20:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:15,512 INFO L93 Difference]: Finished difference Result 10774 states and 13465 transitions. [2024-11-18 16:20:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:20:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-18 16:20:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:15,581 INFO L225 Difference]: With dead ends: 10774 [2024-11-18 16:20:15,582 INFO L226 Difference]: Without dead ends: 10771 [2024-11-18 16:20:15,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:20:15,592 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 1802 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:15,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 2594 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:20:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2024-11-18 16:20:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9386. [2024-11-18 16:20:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9386 states, 7318 states have (on average 1.250751571467614) internal successors, (9153), 7444 states have internal predecessors, (9153), 1023 states have call successors, (1023), 868 states have call predecessors, (1023), 1043 states have return successors, (1589), 1080 states have call predecessors, (1589), 1020 states have call successors, (1589) [2024-11-18 16:20:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9386 states to 9386 states and 11765 transitions. [2024-11-18 16:20:16,572 INFO L78 Accepts]: Start accepts. Automaton has 9386 states and 11765 transitions. Word has length 74 [2024-11-18 16:20:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:16,573 INFO L471 AbstractCegarLoop]: Abstraction has 9386 states and 11765 transitions. [2024-11-18 16:20:16,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:20:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9386 states and 11765 transitions. [2024-11-18 16:20:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:20:16,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:16,578 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:16,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:20:16,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 16:20:16,779 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:16,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 176755392, now seen corresponding path program 2 times [2024-11-18 16:20:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:16,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138364368] [2024-11-18 16:20:16,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:20:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:16,799 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:20:16,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:20:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:16,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138364368] [2024-11-18 16:20:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138364368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:16,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:16,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889855881] [2024-11-18 16:20:16,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:16,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:16,832 INFO L87 Difference]: Start difference. First operand 9386 states and 11765 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:20:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:17,575 INFO L93 Difference]: Finished difference Result 13838 states and 17337 transitions. [2024-11-18 16:20:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:17,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-18 16:20:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:17,612 INFO L225 Difference]: With dead ends: 13838 [2024-11-18 16:20:17,613 INFO L226 Difference]: Without dead ends: 5737 [2024-11-18 16:20:17,634 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 16:20:17,635 INFO L432 NwaCegarLoop]: 825 mSDtfsCounter, 715 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:17,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 941 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2024-11-18 16:20:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5214. [2024-11-18 16:20:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 4104 states have (on average 1.2387914230019492) internal successors, (5084), 4174 states have internal predecessors, (5084), 557 states have call successors, (557), 458 states have call predecessors, (557), 551 states have return successors, (823), 588 states have call predecessors, (823), 554 states have call successors, (823) [2024-11-18 16:20:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 6464 transitions. [2024-11-18 16:20:18,101 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 6464 transitions. Word has length 77 [2024-11-18 16:20:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:18,101 INFO L471 AbstractCegarLoop]: Abstraction has 5214 states and 6464 transitions. [2024-11-18 16:20:18,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:20:18,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 6464 transitions. [2024-11-18 16:20:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:20:18,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:18,105 INFO L215 NwaCegarLoop]: trace histogram [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 16:20:18,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:20:18,107 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:18,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1361935087, now seen corresponding path program 1 times [2024-11-18 16:20:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:18,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433168073] [2024-11-18 16:20:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:20:18,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:18,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433168073] [2024-11-18 16:20:18,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433168073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:18,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:18,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:18,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334477723] [2024-11-18 16:20:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:18,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:18,221 INFO L87 Difference]: Start difference. First operand 5214 states and 6464 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:20:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:20,121 INFO L93 Difference]: Finished difference Result 14734 states and 18067 transitions. [2024-11-18 16:20:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:20:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-18 16:20:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:20,159 INFO L225 Difference]: With dead ends: 14734 [2024-11-18 16:20:20,159 INFO L226 Difference]: Without dead ends: 7826 [2024-11-18 16:20:20,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 16:20:20,179 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 766 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:20,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2113 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 16:20:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2024-11-18 16:20:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7527. [2024-11-18 16:20:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 5873 states have (on average 1.206878937510642) internal successors, (7088), 5987 states have internal predecessors, (7088), 808 states have call successors, (808), 676 states have call predecessors, (808), 844 states have return successors, (1268), 870 states have call predecessors, (1268), 805 states have call successors, (1268) [2024-11-18 16:20:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 9164 transitions. [2024-11-18 16:20:20,767 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 9164 transitions. Word has length 84 [2024-11-18 16:20:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:20,767 INFO L471 AbstractCegarLoop]: Abstraction has 7527 states and 9164 transitions. [2024-11-18 16:20:20,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:20:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 9164 transitions. [2024-11-18 16:20:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:20:20,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:20,772 INFO L215 NwaCegarLoop]: trace histogram [3, 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 16:20:20,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:20:20,773 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:20,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2048487170, now seen corresponding path program 1 times [2024-11-18 16:20:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516608396] [2024-11-18 16:20:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:20,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:20:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516608396] [2024-11-18 16:20:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516608396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:20:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778091780] [2024-11-18 16:20:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:20,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:20:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:20:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:20:20,901 INFO L87 Difference]: Start difference. First operand 7527 states and 9164 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:20:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:22,540 INFO L93 Difference]: Finished difference Result 13306 states and 16070 transitions. [2024-11-18 16:20:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:20:22,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-18 16:20:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:22,577 INFO L225 Difference]: With dead ends: 13306 [2024-11-18 16:20:22,577 INFO L226 Difference]: Without dead ends: 6831 [2024-11-18 16:20:22,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 16:20:22,598 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 1688 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:22,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2163 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 16:20:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6831 states. [2024-11-18 16:20:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6831 to 6474. [2024-11-18 16:20:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6474 states, 5072 states have (on average 1.1979495268138802) internal successors, (6076), 5160 states have internal predecessors, (6076), 691 states have call successors, (691), 573 states have call predecessors, (691), 709 states have return successors, (979), 747 states have call predecessors, (979), 688 states have call successors, (979) [2024-11-18 16:20:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 7746 transitions. [2024-11-18 16:20:23,407 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 7746 transitions. Word has length 93 [2024-11-18 16:20:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:23,408 INFO L471 AbstractCegarLoop]: Abstraction has 6474 states and 7746 transitions. [2024-11-18 16:20:23,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:20:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 7746 transitions. [2024-11-18 16:20:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 16:20:23,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:23,419 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:20:23,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:20:23,419 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:23,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1315684053, now seen corresponding path program 1 times [2024-11-18 16:20:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:23,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484566244] [2024-11-18 16:20:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 16:20:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484566244] [2024-11-18 16:20:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484566244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:20:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487216416] [2024-11-18 16:20:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:23,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:20:23,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:23,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:20:23,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:20:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:23,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 16:20:23,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:20:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 16:20:23,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:20:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487216416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:20:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-18 16:20:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13326336] [2024-11-18 16:20:23,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:23,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 16:20:23,804 INFO L87 Difference]: Start difference. First operand 6474 states and 7746 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 16:20:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:24,146 INFO L93 Difference]: Finished difference Result 8908 states and 10610 transitions. [2024-11-18 16:20:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:24,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-18 16:20:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:24,168 INFO L225 Difference]: With dead ends: 8908 [2024-11-18 16:20:24,168 INFO L226 Difference]: Without dead ends: 2856 [2024-11-18 16:20:24,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 16:20:24,183 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 0 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:24,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3696 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2024-11-18 16:20:24,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2806. [2024-11-18 16:20:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2280 states have (on average 1.2223684210526315) internal successors, (2787), 2309 states have internal predecessors, (2787), 259 states have call successors, (259), 200 states have call predecessors, (259), 265 states have return successors, (385), 297 states have call predecessors, (385), 256 states have call successors, (385) [2024-11-18 16:20:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3431 transitions. [2024-11-18 16:20:24,524 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3431 transitions. Word has length 145 [2024-11-18 16:20:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:24,525 INFO L471 AbstractCegarLoop]: Abstraction has 2806 states and 3431 transitions. [2024-11-18 16:20:24,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 16:20:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3431 transitions. [2024-11-18 16:20:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 16:20:24,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:24,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:24,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 16:20:24,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 16:20:24,735 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:24,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1533847623, now seen corresponding path program 1 times [2024-11-18 16:20:24,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:24,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141237133] [2024-11-18 16:20:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:24,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-18 16:20:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141237133] [2024-11-18 16:20:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141237133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527685605] [2024-11-18 16:20:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:24,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:24,790 INFO L87 Difference]: Start difference. First operand 2806 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 16:20:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:25,046 INFO L93 Difference]: Finished difference Result 3138 states and 3820 transitions. [2024-11-18 16:20:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:25,047 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2024-11-18 16:20:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:25,065 INFO L225 Difference]: With dead ends: 3138 [2024-11-18 16:20:25,066 INFO L226 Difference]: Without dead ends: 2374 [2024-11-18 16:20:25,071 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 16:20:25,071 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 122 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1358 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 16:20:25,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1358 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2024-11-18 16:20:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2024-11-18 16:20:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 1947 states have (on average 1.234206471494607) internal successors, (2403), 1970 states have internal predecessors, (2403), 213 states have call successors, (213), 160 states have call predecessors, (213), 212 states have return successors, (317), 244 states have call predecessors, (317), 210 states have call successors, (317) [2024-11-18 16:20:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 2933 transitions. [2024-11-18 16:20:25,432 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 2933 transitions. Word has length 147 [2024-11-18 16:20:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:25,433 INFO L471 AbstractCegarLoop]: Abstraction has 2374 states and 2933 transitions. [2024-11-18 16:20:25,433 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 16:20:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 2933 transitions. [2024-11-18 16:20:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 16:20:25,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:25,439 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:20:25,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:20:25,439 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:25,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash -816949164, now seen corresponding path program 1 times [2024-11-18 16:20:25,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:25,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606106096] [2024-11-18 16:20:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:25,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 16:20:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606106096] [2024-11-18 16:20:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606106096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:25,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:25,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:25,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929885515] [2024-11-18 16:20:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:25,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:25,534 INFO L87 Difference]: Start difference. First operand 2374 states and 2933 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 16:20:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:26,369 INFO L93 Difference]: Finished difference Result 3919 states and 4766 transitions. [2024-11-18 16:20:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2024-11-18 16:20:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:26,384 INFO L225 Difference]: With dead ends: 3919 [2024-11-18 16:20:26,384 INFO L226 Difference]: Without dead ends: 2283 [2024-11-18 16:20:26,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:20:26,390 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 359 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:26,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1561 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2024-11-18 16:20:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2150. [2024-11-18 16:20:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1773 states have (on average 1.2436548223350254) internal successors, (2205), 1794 states have internal predecessors, (2205), 191 states have call successors, (191), 144 states have call predecessors, (191), 184 states have return successors, (267), 212 states have call predecessors, (267), 188 states have call successors, (267) [2024-11-18 16:20:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2663 transitions. [2024-11-18 16:20:26,563 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2663 transitions. Word has length 159 [2024-11-18 16:20:26,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:26,564 INFO L471 AbstractCegarLoop]: Abstraction has 2150 states and 2663 transitions. [2024-11-18 16:20:26,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 16:20:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2663 transitions. [2024-11-18 16:20:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 16:20:26,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:26,572 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:26,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:20:26,572 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:26,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1398916210, now seen corresponding path program 1 times [2024-11-18 16:20:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076458952] [2024-11-18 16:20:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:26,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-18 16:20:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076458952] [2024-11-18 16:20:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076458952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:20:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842108486] [2024-11-18 16:20:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:26,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:20:26,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:26,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:20:26,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:20:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:27,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 16:20:27,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:20:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 16:20:27,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:20:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 16:20:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842108486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:20:27,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:20:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-18 16:20:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044010951] [2024-11-18 16:20:27,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:20:27,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 16:20:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:27,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 16:20:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-18 16:20:27,421 INFO L87 Difference]: Start difference. First operand 2150 states and 2663 transitions. Second operand has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-18 16:20:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:29,314 INFO L93 Difference]: Finished difference Result 4229 states and 5196 transitions. [2024-11-18 16:20:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 16:20:29,315 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2024-11-18 16:20:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:29,331 INFO L225 Difference]: With dead ends: 4229 [2024-11-18 16:20:29,331 INFO L226 Difference]: Without dead ends: 2442 [2024-11-18 16:20:29,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-18 16:20:29,338 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 1739 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:29,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 2835 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 16:20:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-18 16:20:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2186. [2024-11-18 16:20:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1774 states have (on average 1.2226606538895153) internal successors, (2169), 1799 states have internal predecessors, (2169), 210 states have call successors, (210), 165 states have call predecessors, (210), 200 states have return successors, (314), 222 states have call predecessors, (314), 207 states have call successors, (314) [2024-11-18 16:20:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2693 transitions. [2024-11-18 16:20:29,537 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2693 transitions. Word has length 162 [2024-11-18 16:20:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:29,537 INFO L471 AbstractCegarLoop]: Abstraction has 2186 states and 2693 transitions. [2024-11-18 16:20:29,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-18 16:20:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2693 transitions. [2024-11-18 16:20:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:29,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:29,542 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:29,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 16:20:29,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:20:29,744 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:29,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1803564786, now seen corresponding path program 1 times [2024-11-18 16:20:29,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:29,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782533560] [2024-11-18 16:20:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:29,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 16:20:29,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782533560] [2024-11-18 16:20:29,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782533560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:20:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769496402] [2024-11-18 16:20:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:20:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:20:29,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:20:29,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:20:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:30,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 16:20:30,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:20:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-18 16:20:30,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 16:20:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769496402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:30,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 16:20:30,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-18 16:20:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434253162] [2024-11-18 16:20:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:30,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:20:30,055 INFO L87 Difference]: Start difference. First operand 2186 states and 2693 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 16:20:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:30,889 INFO L93 Difference]: Finished difference Result 3869 states and 4654 transitions. [2024-11-18 16:20:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:20:30,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2024-11-18 16:20:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:30,905 INFO L225 Difference]: With dead ends: 3869 [2024-11-18 16:20:30,905 INFO L226 Difference]: Without dead ends: 1908 [2024-11-18 16:20:30,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:20:30,911 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 1007 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:30,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1126 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2024-11-18 16:20:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1831. [2024-11-18 16:20:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1499 states have (on average 1.2321547698465645) internal successors, (1847), 1514 states have internal predecessors, (1847), 173 states have call successors, (173), 131 states have call predecessors, (173), 157 states have return successors, (240), 186 states have call predecessors, (240), 170 states have call successors, (240) [2024-11-18 16:20:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2260 transitions. [2024-11-18 16:20:31,064 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2260 transitions. Word has length 179 [2024-11-18 16:20:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:31,065 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2260 transitions. [2024-11-18 16:20:31,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 16:20:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2260 transitions. [2024-11-18 16:20:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:31,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:31,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:31,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 16:20:31,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 16:20:31,270 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:31,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1864499729, now seen corresponding path program 1 times [2024-11-18 16:20:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717604638] [2024-11-18 16:20:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:31,329 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 16:20:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717604638] [2024-11-18 16:20:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717604638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:31,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:31,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328592561] [2024-11-18 16:20:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:31,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:31,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:31,333 INFO L87 Difference]: Start difference. First operand 1831 states and 2260 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 16:20:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:31,452 INFO L93 Difference]: Finished difference Result 2217 states and 2862 transitions. [2024-11-18 16:20:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:31,527 INFO L225 Difference]: With dead ends: 2217 [2024-11-18 16:20:31,531 INFO L226 Difference]: Without dead ends: 1831 [2024-11-18 16:20:31,532 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 16:20:31,533 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 607 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 868 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 16:20:31,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 868 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-11-18 16:20:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1831. [2024-11-18 16:20:31,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1499 states have (on average 1.2314876584389594) internal successors, (1846), 1514 states have internal predecessors, (1846), 173 states have call successors, (173), 131 states have call predecessors, (173), 157 states have return successors, (240), 186 states have call predecessors, (240), 170 states have call successors, (240) [2024-11-18 16:20:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2259 transitions. [2024-11-18 16:20:31,673 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2259 transitions. Word has length 179 [2024-11-18 16:20:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:31,673 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2259 transitions. [2024-11-18 16:20:31,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 16:20:31,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2259 transitions. [2024-11-18 16:20:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:31,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:31,677 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:31,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:20:31,677 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:31,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:31,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1740636077, now seen corresponding path program 1 times [2024-11-18 16:20:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:31,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745982863] [2024-11-18 16:20:31,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:31,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:31,733 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 16:20:31,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745982863] [2024-11-18 16:20:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745982863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:31,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:31,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:20:31,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561942171] [2024-11-18 16:20:31,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:31,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:20:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:20:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:20:31,737 INFO L87 Difference]: Start difference. First operand 1831 states and 2259 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 16:20:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:31,863 INFO L93 Difference]: Finished difference Result 2209 states and 2845 transitions. [2024-11-18 16:20:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:20:31,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:31,876 INFO L225 Difference]: With dead ends: 2209 [2024-11-18 16:20:31,877 INFO L226 Difference]: Without dead ends: 1831 [2024-11-18 16:20:31,880 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 16:20:31,881 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 598 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 867 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 16:20:31,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 867 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:20:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-11-18 16:20:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1831. [2024-11-18 16:20:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1499 states have (on average 1.2308205470313542) internal successors, (1845), 1514 states have internal predecessors, (1845), 173 states have call successors, (173), 131 states have call predecessors, (173), 157 states have return successors, (240), 186 states have call predecessors, (240), 170 states have call successors, (240) [2024-11-18 16:20:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2258 transitions. [2024-11-18 16:20:32,030 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2258 transitions. Word has length 179 [2024-11-18 16:20:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:32,030 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2258 transitions. [2024-11-18 16:20:32,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 16:20:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2258 transitions. [2024-11-18 16:20:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:32,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:32,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:32,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:20:32,034 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:32,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -954638187, now seen corresponding path program 1 times [2024-11-18 16:20:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478055437] [2024-11-18 16:20:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:32,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:32,154 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 16:20:32,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478055437] [2024-11-18 16:20:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478055437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032179550] [2024-11-18 16:20:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:32,157 INFO L87 Difference]: Start difference. First operand 1831 states and 2258 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 16:20:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:32,954 INFO L93 Difference]: Finished difference Result 2629 states and 3518 transitions. [2024-11-18 16:20:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:20:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:32,967 INFO L225 Difference]: With dead ends: 2629 [2024-11-18 16:20:32,967 INFO L226 Difference]: Without dead ends: 2254 [2024-11-18 16:20:32,969 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 16:20:32,970 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 1336 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:32,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 1876 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-18 16:20:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2223. [2024-11-18 16:20:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1863 states have (on average 1.2989801395598497) internal successors, (2420), 1879 states have internal predecessors, (2420), 194 states have call successors, (194), 137 states have call predecessors, (194), 164 states have return successors, (262), 207 states have call predecessors, (262), 191 states have call successors, (262) [2024-11-18 16:20:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2876 transitions. [2024-11-18 16:20:33,149 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2876 transitions. Word has length 179 [2024-11-18 16:20:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:33,150 INFO L471 AbstractCegarLoop]: Abstraction has 2223 states and 2876 transitions. [2024-11-18 16:20:33,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 16:20:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2876 transitions. [2024-11-18 16:20:33,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:33,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:33,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:20:33,154 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:33,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1954589329, now seen corresponding path program 1 times [2024-11-18 16:20:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056899908] [2024-11-18 16:20:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:33,302 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 16:20:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056899908] [2024-11-18 16:20:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056899908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:33,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648436752] [2024-11-18 16:20:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:33,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:33,305 INFO L87 Difference]: Start difference. First operand 2223 states and 2876 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:34,291 INFO L93 Difference]: Finished difference Result 3485 states and 4889 transitions. [2024-11-18 16:20:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:34,306 INFO L225 Difference]: With dead ends: 3485 [2024-11-18 16:20:34,306 INFO L226 Difference]: Without dead ends: 2718 [2024-11-18 16:20:34,308 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 16:20:34,309 INFO L432 NwaCegarLoop]: 875 mSDtfsCounter, 1342 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:34,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 3533 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2024-11-18 16:20:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2587. [2024-11-18 16:20:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 2199 states have (on average 1.3365165984538427) internal successors, (2939), 2216 states have internal predecessors, (2939), 215 states have call successors, (215), 143 states have call predecessors, (215), 171 states have return successors, (286), 229 states have call predecessors, (286), 212 states have call successors, (286) [2024-11-18 16:20:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3440 transitions. [2024-11-18 16:20:34,506 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3440 transitions. Word has length 179 [2024-11-18 16:20:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:34,507 INFO L471 AbstractCegarLoop]: Abstraction has 2587 states and 3440 transitions. [2024-11-18 16:20:34,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3440 transitions. [2024-11-18 16:20:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:34,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:34,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:34,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:20:34,511 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:34,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:34,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1343320271, now seen corresponding path program 1 times [2024-11-18 16:20:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:34,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274830336] [2024-11-18 16:20:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:34,629 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 16:20:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274830336] [2024-11-18 16:20:34,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274830336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:34,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072001876] [2024-11-18 16:20:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:34,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:34,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:34,632 INFO L87 Difference]: Start difference. First operand 2587 states and 3440 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:35,190 INFO L93 Difference]: Finished difference Result 3838 states and 5440 transitions. [2024-11-18 16:20:35,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:35,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:35,203 INFO L225 Difference]: With dead ends: 3838 [2024-11-18 16:20:35,203 INFO L226 Difference]: Without dead ends: 2707 [2024-11-18 16:20:35,206 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 16:20:35,206 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 995 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:35,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1400 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2024-11-18 16:20:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2587. [2024-11-18 16:20:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 2199 states have (on average 1.3351523419736244) internal successors, (2936), 2216 states have internal predecessors, (2936), 215 states have call successors, (215), 143 states have call predecessors, (215), 171 states have return successors, (286), 229 states have call predecessors, (286), 212 states have call successors, (286) [2024-11-18 16:20:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3437 transitions. [2024-11-18 16:20:35,412 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3437 transitions. Word has length 179 [2024-11-18 16:20:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:35,412 INFO L471 AbstractCegarLoop]: Abstraction has 2587 states and 3437 transitions. [2024-11-18 16:20:35,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3437 transitions. [2024-11-18 16:20:35,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:35,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:35,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:35,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:20:35,417 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:35,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash -61871407, now seen corresponding path program 1 times [2024-11-18 16:20:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:35,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774427056] [2024-11-18 16:20:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:35,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:35,545 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 16:20:35,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:35,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774427056] [2024-11-18 16:20:35,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774427056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:35,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:35,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111116924] [2024-11-18 16:20:35,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:35,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:35,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:35,548 INFO L87 Difference]: Start difference. First operand 2587 states and 3437 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:36,139 INFO L93 Difference]: Finished difference Result 3833 states and 5424 transitions. [2024-11-18 16:20:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:36,156 INFO L225 Difference]: With dead ends: 3833 [2024-11-18 16:20:36,156 INFO L226 Difference]: Without dead ends: 2702 [2024-11-18 16:20:36,160 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 16:20:36,161 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 992 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:36,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1392 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2024-11-18 16:20:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2587. [2024-11-18 16:20:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 2199 states have (on average 1.333788085493406) internal successors, (2933), 2216 states have internal predecessors, (2933), 215 states have call successors, (215), 143 states have call predecessors, (215), 171 states have return successors, (286), 229 states have call predecessors, (286), 212 states have call successors, (286) [2024-11-18 16:20:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3434 transitions. [2024-11-18 16:20:36,374 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3434 transitions. Word has length 179 [2024-11-18 16:20:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:36,375 INFO L471 AbstractCegarLoop]: Abstraction has 2587 states and 3434 transitions. [2024-11-18 16:20:36,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3434 transitions. [2024-11-18 16:20:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:36,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:36,379 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:20:36,379 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:36,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1832462479, now seen corresponding path program 1 times [2024-11-18 16:20:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978851856] [2024-11-18 16:20:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:36,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:36,523 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 16:20:36,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978851856] [2024-11-18 16:20:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978851856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:36,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244105272] [2024-11-18 16:20:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:36,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:36,526 INFO L87 Difference]: Start difference. First operand 2587 states and 3434 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:37,517 INFO L93 Difference]: Finished difference Result 4628 states and 6664 transitions. [2024-11-18 16:20:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:37,532 INFO L225 Difference]: With dead ends: 4628 [2024-11-18 16:20:37,532 INFO L226 Difference]: Without dead ends: 3497 [2024-11-18 16:20:37,535 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 16:20:37,535 INFO L432 NwaCegarLoop]: 861 mSDtfsCounter, 1321 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:37,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 3479 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2024-11-18 16:20:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3356. [2024-11-18 16:20:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2910 states have (on average 1.3890034364261168) internal successors, (4042), 2931 states have internal predecessors, (4042), 257 states have call successors, (257), 155 states have call predecessors, (257), 187 states have return successors, (340), 273 states have call predecessors, (340), 254 states have call successors, (340) [2024-11-18 16:20:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4639 transitions. [2024-11-18 16:20:37,812 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4639 transitions. Word has length 179 [2024-11-18 16:20:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:37,812 INFO L471 AbstractCegarLoop]: Abstraction has 3356 states and 4639 transitions. [2024-11-18 16:20:37,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4639 transitions. [2024-11-18 16:20:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:37,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:37,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:37,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:20:37,817 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:37,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1015923951, now seen corresponding path program 1 times [2024-11-18 16:20:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207735245] [2024-11-18 16:20:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:37,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:37,931 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 16:20:37,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207735245] [2024-11-18 16:20:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207735245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873111813] [2024-11-18 16:20:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:37,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:37,934 INFO L87 Difference]: Start difference. First operand 3356 states and 4639 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:38,563 INFO L93 Difference]: Finished difference Result 5487 states and 8058 transitions. [2024-11-18 16:20:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:38,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:38,579 INFO L225 Difference]: With dead ends: 5487 [2024-11-18 16:20:38,580 INFO L226 Difference]: Without dead ends: 3587 [2024-11-18 16:20:38,584 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 16:20:38,584 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 988 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:38,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1378 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2024-11-18 16:20:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3356. [2024-11-18 16:20:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2910 states have (on average 1.3872852233676976) internal successors, (4037), 2931 states have internal predecessors, (4037), 257 states have call successors, (257), 155 states have call predecessors, (257), 187 states have return successors, (340), 273 states have call predecessors, (340), 254 states have call successors, (340) [2024-11-18 16:20:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4634 transitions. [2024-11-18 16:20:38,856 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4634 transitions. Word has length 179 [2024-11-18 16:20:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:38,856 INFO L471 AbstractCegarLoop]: Abstraction has 3356 states and 4634 transitions. [2024-11-18 16:20:38,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:38,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4634 transitions. [2024-11-18 16:20:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:38,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:38,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:38,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 16:20:38,860 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:38,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1939091377, now seen corresponding path program 1 times [2024-11-18 16:20:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:38,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424487055] [2024-11-18 16:20:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:38,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:38,981 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 16:20:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424487055] [2024-11-18 16:20:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424487055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578645620] [2024-11-18 16:20:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:38,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:38,985 INFO L87 Difference]: Start difference. First operand 3356 states and 4634 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:39,885 INFO L93 Difference]: Finished difference Result 7079 states and 10556 transitions. [2024-11-18 16:20:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:39,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:39,905 INFO L225 Difference]: With dead ends: 7079 [2024-11-18 16:20:39,905 INFO L226 Difference]: Without dead ends: 5179 [2024-11-18 16:20:39,911 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 16:20:39,912 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 1343 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:39,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 2483 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:20:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2024-11-18 16:20:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 5008. [2024-11-18 16:20:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 4440 states have (on average 1.4547297297297297) internal successors, (6459), 4475 states have internal predecessors, (6459), 341 states have call successors, (341), 179 states have call predecessors, (341), 225 states have return successors, (472), 361 states have call predecessors, (472), 338 states have call successors, (472) [2024-11-18 16:20:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 7272 transitions. [2024-11-18 16:20:40,278 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 7272 transitions. Word has length 179 [2024-11-18 16:20:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:40,279 INFO L471 AbstractCegarLoop]: Abstraction has 5008 states and 7272 transitions. [2024-11-18 16:20:40,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 7272 transitions. [2024-11-18 16:20:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:40,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:40,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:40,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-18 16:20:40,283 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:40,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1553228975, now seen corresponding path program 1 times [2024-11-18 16:20:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:40,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959398571] [2024-11-18 16:20:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:40,401 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 16:20:40,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959398571] [2024-11-18 16:20:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959398571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:40,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854375623] [2024-11-18 16:20:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:40,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:40,403 INFO L87 Difference]: Start difference. First operand 5008 states and 7272 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:41,093 INFO L93 Difference]: Finished difference Result 9111 states and 13966 transitions. [2024-11-18 16:20:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:41,115 INFO L225 Difference]: With dead ends: 9111 [2024-11-18 16:20:41,115 INFO L226 Difference]: Without dead ends: 5559 [2024-11-18 16:20:41,124 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 16:20:41,124 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 984 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:41,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1364 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2024-11-18 16:20:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5008. [2024-11-18 16:20:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 4440 states have (on average 1.4527027027027026) internal successors, (6450), 4475 states have internal predecessors, (6450), 341 states have call successors, (341), 179 states have call predecessors, (341), 225 states have return successors, (472), 361 states have call predecessors, (472), 338 states have call successors, (472) [2024-11-18 16:20:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 7263 transitions. [2024-11-18 16:20:41,499 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 7263 transitions. Word has length 179 [2024-11-18 16:20:41,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:41,499 INFO L471 AbstractCegarLoop]: Abstraction has 5008 states and 7263 transitions. [2024-11-18 16:20:41,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 7263 transitions. [2024-11-18 16:20:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:41,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:41,503 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:41,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 16:20:41,503 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1817876465, now seen corresponding path program 1 times [2024-11-18 16:20:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800594177] [2024-11-18 16:20:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:41,610 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 16:20:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:41,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800594177] [2024-11-18 16:20:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800594177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:41,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:41,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309921525] [2024-11-18 16:20:41,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:41,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:41,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:41,613 INFO L87 Difference]: Start difference. First operand 5008 states and 7263 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:42,362 INFO L93 Difference]: Finished difference Result 9053 states and 13832 transitions. [2024-11-18 16:20:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:42,384 INFO L225 Difference]: With dead ends: 9053 [2024-11-18 16:20:42,384 INFO L226 Difference]: Without dead ends: 5501 [2024-11-18 16:20:42,391 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 16:20:42,391 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 980 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:42,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1350 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2024-11-18 16:20:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 5008. [2024-11-18 16:20:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 4440 states have (on average 1.4506756756756756) internal successors, (6441), 4475 states have internal predecessors, (6441), 341 states have call successors, (341), 179 states have call predecessors, (341), 225 states have return successors, (472), 361 states have call predecessors, (472), 338 states have call successors, (472) [2024-11-18 16:20:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 7254 transitions. [2024-11-18 16:20:42,762 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 7254 transitions. Word has length 179 [2024-11-18 16:20:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:42,763 INFO L471 AbstractCegarLoop]: Abstraction has 5008 states and 7254 transitions. [2024-11-18 16:20:42,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 7254 transitions. [2024-11-18 16:20:42,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:42,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:42,769 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:42,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 16:20:42,769 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:42,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1153911885, now seen corresponding path program 1 times [2024-11-18 16:20:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638219095] [2024-11-18 16:20:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:42,875 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 16:20:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638219095] [2024-11-18 16:20:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638219095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:42,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111254704] [2024-11-18 16:20:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:42,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:42,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:42,878 INFO L87 Difference]: Start difference. First operand 5008 states and 7254 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:43,569 INFO L93 Difference]: Finished difference Result 9024 states and 13756 transitions. [2024-11-18 16:20:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:43,590 INFO L225 Difference]: With dead ends: 9024 [2024-11-18 16:20:43,590 INFO L226 Difference]: Without dead ends: 5472 [2024-11-18 16:20:43,596 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 16:20:43,597 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 977 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:43,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1342 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2024-11-18 16:20:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 5008. [2024-11-18 16:20:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 4440 states have (on average 1.4486486486486487) internal successors, (6432), 4475 states have internal predecessors, (6432), 341 states have call successors, (341), 179 states have call predecessors, (341), 225 states have return successors, (472), 361 states have call predecessors, (472), 338 states have call successors, (472) [2024-11-18 16:20:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 7245 transitions. [2024-11-18 16:20:44,027 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 7245 transitions. Word has length 179 [2024-11-18 16:20:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:44,028 INFO L471 AbstractCegarLoop]: Abstraction has 5008 states and 7245 transitions. [2024-11-18 16:20:44,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 7245 transitions. [2024-11-18 16:20:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:44,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:44,031 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:44,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 16:20:44,032 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:44,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:44,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1244075953, now seen corresponding path program 1 times [2024-11-18 16:20:44,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:44,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721723168] [2024-11-18 16:20:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:44,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:44,147 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 16:20:44,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721723168] [2024-11-18 16:20:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721723168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:44,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:44,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326248218] [2024-11-18 16:20:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:44,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:44,151 INFO L87 Difference]: Start difference. First operand 5008 states and 7245 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:45,356 INFO L93 Difference]: Finished difference Result 12285 states and 18927 transitions. [2024-11-18 16:20:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:45,377 INFO L225 Difference]: With dead ends: 12285 [2024-11-18 16:20:45,378 INFO L226 Difference]: Without dead ends: 8733 [2024-11-18 16:20:45,385 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 16:20:45,385 INFO L432 NwaCegarLoop]: 831 mSDtfsCounter, 1276 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:45,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 3365 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8733 states. [2024-11-18 16:20:45,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8733 to 8537. [2024-11-18 16:20:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8537 states, 7707 states have (on average 1.5108343064746335) internal successors, (11644), 7788 states have internal predecessors, (11644), 509 states have call successors, (509), 227 states have call predecessors, (509), 319 states have return successors, (832), 537 states have call predecessors, (832), 506 states have call successors, (832) [2024-11-18 16:20:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 12985 transitions. [2024-11-18 16:20:45,883 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 12985 transitions. Word has length 179 [2024-11-18 16:20:45,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:45,883 INFO L471 AbstractCegarLoop]: Abstraction has 8537 states and 12985 transitions. [2024-11-18 16:20:45,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 12985 transitions. [2024-11-18 16:20:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:45,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:45,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:45,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 16:20:45,888 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:45,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash -905788403, now seen corresponding path program 1 times [2024-11-18 16:20:45,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:45,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040305498] [2024-11-18 16:20:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:45,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:45,990 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 16:20:45,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:45,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040305498] [2024-11-18 16:20:45,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040305498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:45,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:45,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326209788] [2024-11-18 16:20:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:45,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:45,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:45,994 INFO L87 Difference]: Start difference. First operand 8537 states and 12985 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:46,917 INFO L93 Difference]: Finished difference Result 16780 states and 26660 transitions. [2024-11-18 16:20:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:46,940 INFO L225 Difference]: With dead ends: 16780 [2024-11-18 16:20:46,940 INFO L226 Difference]: Without dead ends: 9699 [2024-11-18 16:20:46,951 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 16:20:46,951 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 971 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:46,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1326 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:20:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9699 states. [2024-11-18 16:20:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9699 to 8537. [2024-11-18 16:20:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8537 states, 7707 states have (on average 1.508628519527702) internal successors, (11627), 7788 states have internal predecessors, (11627), 509 states have call successors, (509), 227 states have call predecessors, (509), 319 states have return successors, (832), 537 states have call predecessors, (832), 506 states have call successors, (832) [2024-11-18 16:20:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8537 states to 8537 states and 12968 transitions. [2024-11-18 16:20:47,446 INFO L78 Accepts]: Start accepts. Automaton has 8537 states and 12968 transitions. Word has length 179 [2024-11-18 16:20:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:47,447 INFO L471 AbstractCegarLoop]: Abstraction has 8537 states and 12968 transitions. [2024-11-18 16:20:47,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 8537 states and 12968 transitions. [2024-11-18 16:20:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:47,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:47,451 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:47,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-18 16:20:47,451 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:47,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -479233905, now seen corresponding path program 1 times [2024-11-18 16:20:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605257296] [2024-11-18 16:20:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:47,566 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 16:20:47,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605257296] [2024-11-18 16:20:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605257296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:47,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:47,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239230867] [2024-11-18 16:20:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:47,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:47,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:47,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:47,569 INFO L87 Difference]: Start difference. First operand 8537 states and 12968 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:49,146 INFO L93 Difference]: Finished difference Result 24898 states and 39787 transitions. [2024-11-18 16:20:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:49,206 INFO L225 Difference]: With dead ends: 24898 [2024-11-18 16:20:49,206 INFO L226 Difference]: Without dead ends: 17817 [2024-11-18 16:20:49,225 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 16:20:49,226 INFO L432 NwaCegarLoop]: 820 mSDtfsCounter, 1606 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:49,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 3317 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17817 states. [2024-11-18 16:20:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17817 to 16067. [2024-11-18 16:20:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16067 states, 14675 states have (on average 1.5608177172061328) internal successors, (22905), 14902 states have internal predecessors, (22905), 829 states have call successors, (829), 323 states have call predecessors, (829), 561 states have return successors, (1920), 873 states have call predecessors, (1920), 826 states have call successors, (1920) [2024-11-18 16:20:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16067 states to 16067 states and 25654 transitions. [2024-11-18 16:20:50,203 INFO L78 Accepts]: Start accepts. Automaton has 16067 states and 25654 transitions. Word has length 179 [2024-11-18 16:20:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:50,204 INFO L471 AbstractCegarLoop]: Abstraction has 16067 states and 25654 transitions. [2024-11-18 16:20:50,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16067 states and 25654 transitions. [2024-11-18 16:20:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:50,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:50,211 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:50,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-18 16:20:50,211 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:50,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1019663411, now seen corresponding path program 1 times [2024-11-18 16:20:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895319543] [2024-11-18 16:20:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:50,330 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 16:20:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895319543] [2024-11-18 16:20:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895319543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841395336] [2024-11-18 16:20:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:50,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:50,333 INFO L87 Difference]: Start difference. First operand 16067 states and 25654 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:52,879 INFO L93 Difference]: Finished difference Result 50628 states and 84663 transitions. [2024-11-18 16:20:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:52,970 INFO L225 Difference]: With dead ends: 50628 [2024-11-18 16:20:52,970 INFO L226 Difference]: Without dead ends: 36017 [2024-11-18 16:20:53,000 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 16:20:53,001 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1402 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:53,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 2394 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36017 states. [2024-11-18 16:20:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36017 to 33070. [2024-11-18 16:20:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33070 states, 30408 states have (on average 1.607373059721126) internal successors, (48877), 31089 states have internal predecessors, (48877), 1453 states have call successors, (1453), 515 states have call predecessors, (1453), 1207 states have return successors, (5616), 1529 states have call predecessors, (5616), 1450 states have call successors, (5616) [2024-11-18 16:20:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33070 states to 33070 states and 55946 transitions. [2024-11-18 16:20:54,836 INFO L78 Accepts]: Start accepts. Automaton has 33070 states and 55946 transitions. Word has length 179 [2024-11-18 16:20:54,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:54,837 INFO L471 AbstractCegarLoop]: Abstraction has 33070 states and 55946 transitions. [2024-11-18 16:20:54,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 33070 states and 55946 transitions. [2024-11-18 16:20:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:20:54,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:54,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:54,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-18 16:20:54,848 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:54,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1175643953, now seen corresponding path program 1 times [2024-11-18 16:20:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810545799] [2024-11-18 16:20:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:54,962 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 16:20:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810545799] [2024-11-18 16:20:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810545799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:54,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092624879] [2024-11-18 16:20:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:54,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:54,965 INFO L87 Difference]: Start difference. First operand 33070 states and 55946 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:20:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:59,786 INFO L93 Difference]: Finished difference Result 109009 states and 194089 transitions. [2024-11-18 16:20:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:59,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2024-11-18 16:20:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:21:00,043 INFO L225 Difference]: With dead ends: 109009 [2024-11-18 16:21:00,043 INFO L226 Difference]: Without dead ends: 77395 [2024-11-18 16:21:00,129 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 16:21:00,129 INFO L432 NwaCegarLoop]: 815 mSDtfsCounter, 1537 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:21:00,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 3297 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 16:21:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77395 states. [2024-11-18 16:21:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77395 to 72083. [2024-11-18 16:21:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72083 states, 66427 states have (on average 1.648019630571906) internal successors, (109473), 68502 states have internal predecessors, (109473), 2669 states have call successors, (2669), 899 states have call predecessors, (2669), 2985 states have return successors, (19120), 2809 states have call predecessors, (19120), 2666 states have call successors, (19120) [2024-11-18 16:21:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72083 states to 72083 states and 131262 transitions. [2024-11-18 16:21:05,430 INFO L78 Accepts]: Start accepts. Automaton has 72083 states and 131262 transitions. Word has length 179 [2024-11-18 16:21:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:21:05,430 INFO L471 AbstractCegarLoop]: Abstraction has 72083 states and 131262 transitions. [2024-11-18 16:21:05,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 16:21:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 72083 states and 131262 transitions. [2024-11-18 16:21:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-18 16:21:05,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:21:05,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:05,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-18 16:21:05,449 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:21:05,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:21:05,449 INFO L85 PathProgramCache]: Analyzing trace with hash -765033587, now seen corresponding path program 1 times [2024-11-18 16:21:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:21:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659235722] [2024-11-18 16:21:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:21:05,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:21:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:21:05,673 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 16:21:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:21:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659235722] [2024-11-18 16:21:05,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659235722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:21:05,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:21:05,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:21:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402503230] [2024-11-18 16:21:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:21:05,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:21:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:21:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:21:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:21:05,676 INFO L87 Difference]: Start difference. First operand 72083 states and 131262 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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)