./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.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 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:43:30,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:43:30,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:43:30,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:43:30,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:43:30,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:43:30,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:43:30,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:43:30,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:43:30,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:43:30,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:43:30,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:43:30,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:43:30,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:43:30,785 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:43:30,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:43:30,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:43:30,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:43:30,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:43:30,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:43:30,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:43:30,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:43:30,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:43:30,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:43:30,788 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:43:30,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:43:30,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:43:30,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:43:30,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:43:30,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:43:30,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:43:30,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:43:30,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:30,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:43:30,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:43:30,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:43:30,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:43:30,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:43:30,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:43:30,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:43:30,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:43:30,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:43:30,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 [2024-10-12 21:43:30,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:43:31,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:43:31,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:43:31,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:43:31,012 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:43:31,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-10-12 21:43:32,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:43:32,525 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:43:32,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-10-12 21:43:32,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d83db647/a6eb504603a448cdbdb2d026fd738226/FLAGbc907a76b [2024-10-12 21:43:32,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d83db647/a6eb504603a448cdbdb2d026fd738226 [2024-10-12 21:43:32,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:43:32,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:43:32,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:32,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:43:32,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:43:32,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:32" (1/1) ... [2024-10-12 21:43:32,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51345166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:32, skipping insertion in model container [2024-10-12 21:43:32,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:32" (1/1) ... [2024-10-12 21:43:32,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:43:32,800 WARN L248 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.05.cil-2.c[914,927] [2024-10-12 21:43:32,874 WARN L248 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.05.cil-2.c[7115,7128] [2024-10-12 21:43:32,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:32,952 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:43:32,965 WARN L248 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.05.cil-2.c[914,927] [2024-10-12 21:43:32,980 WARN L248 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.05.cil-2.c[7115,7128] [2024-10-12 21:43:33,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:33,023 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:43:33,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33 WrapperNode [2024-10-12 21:43:33,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:33,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:33,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:43:33,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:43:33,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,065 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 654 [2024-10-12 21:43:33,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:33,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:43:33,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:43:33,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:43:33,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,125 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:43:33,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:43:33,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:43:33,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:43:33,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:43:33,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (1/1) ... [2024-10-12 21:43:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:43:33,243 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) [2024-10-12 21:43:33,245 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 [2024-10-12 21:43:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:43:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:43:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:43:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-12 21:43:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-12 21:43:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:43:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:43:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:43:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:43:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-12 21:43:33,280 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-12 21:43:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:43:33,280 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:43:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:43:33,280 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:43:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-12 21:43:33,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-12 21:43:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-12 21:43:33,281 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-12 21:43:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-12 21:43:33,281 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-12 21:43:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:43:33,281 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:43:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:43:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:43:33,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:43:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-12 21:43:33,282 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-12 21:43:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:43:33,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:43:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:43:33,282 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:43:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-12 21:43:33,283 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-12 21:43:33,362 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:43:33,364 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:43:33,954 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-10-12 21:43:33,954 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:43:34,015 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:43:34,016 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-12 21:43:34,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:34 BoogieIcfgContainer [2024-10-12 21:43:34,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:43:34,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:43:34,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:43:34,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:43:34,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:43:32" (1/3) ... [2024-10-12 21:43:34,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4770c25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:34, skipping insertion in model container [2024-10-12 21:43:34,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:33" (2/3) ... [2024-10-12 21:43:34,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4770c25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:34, skipping insertion in model container [2024-10-12 21:43:34,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:34" (3/3) ... [2024-10-12 21:43:34,024 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-10-12 21:43:34,038 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:43:34,038 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:43:34,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:43:34,112 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;@5f6e6a51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:43:34,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:43:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 241 states have internal predecessors, (392), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-12 21:43:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:34,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:34,128 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] [2024-10-12 21:43:34,128 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:34,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1937458787, now seen corresponding path program 1 times [2024-10-12 21:43:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195945138] [2024-10-12 21:43:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195945138] [2024-10-12 21:43:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195945138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374221941] [2024-10-12 21:43:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:34,508 INFO L87 Difference]: Start difference. First operand has 286 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 241 states have internal predecessors, (392), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:35,164 INFO L93 Difference]: Finished difference Result 571 states and 920 transitions. [2024-10-12 21:43:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 21:43:35,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:35,175 INFO L225 Difference]: With dead ends: 571 [2024-10-12 21:43:35,175 INFO L226 Difference]: Without dead ends: 297 [2024-10-12 21:43:35,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:35,180 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 603 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:35,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 719 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:43:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-12 21:43:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 280. [2024-10-12 21:43:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 230 states have (on average 1.565217391304348) internal successors, (360), 235 states have internal predecessors, (360), 35 states have call successors, (35), 15 states have call predecessors, (35), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-12 21:43:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 426 transitions. [2024-10-12 21:43:35,225 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 426 transitions. Word has length 58 [2024-10-12 21:43:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:35,225 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 426 transitions. [2024-10-12 21:43:35,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:35,226 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 426 transitions. [2024-10-12 21:43:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:35,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:35,228 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] [2024-10-12 21:43:35,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:43:35,228 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:35,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:35,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1876428251, now seen corresponding path program 1 times [2024-10-12 21:43:35,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:35,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268921525] [2024-10-12 21:43:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:35,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:35,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268921525] [2024-10-12 21:43:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268921525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:35,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:35,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3479916] [2024-10-12 21:43:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:35,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:35,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:35,402 INFO L87 Difference]: Start difference. First operand 280 states and 426 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:36,187 INFO L93 Difference]: Finished difference Result 486 states and 723 transitions. [2024-10-12 21:43:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:43:36,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:36,191 INFO L225 Difference]: With dead ends: 486 [2024-10-12 21:43:36,191 INFO L226 Difference]: Without dead ends: 405 [2024-10-12 21:43:36,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:36,192 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 538 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:36,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1284 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:43:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-10-12 21:43:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 368. [2024-10-12 21:43:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 298 states have (on average 1.5302013422818792) internal successors, (456), 305 states have internal predecessors, (456), 46 states have call successors, (46), 22 states have call predecessors, (46), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2024-10-12 21:43:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 549 transitions. [2024-10-12 21:43:36,221 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 549 transitions. Word has length 58 [2024-10-12 21:43:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:36,221 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 549 transitions. [2024-10-12 21:43:36,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 549 transitions. [2024-10-12 21:43:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:36,223 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:36,223 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] [2024-10-12 21:43:36,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:43:36,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:36,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2010661915, now seen corresponding path program 1 times [2024-10-12 21:43:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:36,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942221572] [2024-10-12 21:43:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942221572] [2024-10-12 21:43:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942221572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884947878] [2024-10-12 21:43:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:36,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:36,346 INFO L87 Difference]: Start difference. First operand 368 states and 549 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:37,201 INFO L93 Difference]: Finished difference Result 688 states and 998 transitions. [2024-10-12 21:43:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:43:37,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:37,205 INFO L225 Difference]: With dead ends: 688 [2024-10-12 21:43:37,205 INFO L226 Difference]: Without dead ends: 526 [2024-10-12 21:43:37,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:43:37,206 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 1004 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:37,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1148 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-12 21:43:37,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 456. [2024-10-12 21:43:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 366 states have (on average 1.505464480874317) internal successors, (551), 375 states have internal predecessors, (551), 57 states have call successors, (57), 29 states have call predecessors, (57), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2024-10-12 21:43:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 674 transitions. [2024-10-12 21:43:37,245 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 674 transitions. Word has length 58 [2024-10-12 21:43:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:37,245 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 674 transitions. [2024-10-12 21:43:37,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 674 transitions. [2024-10-12 21:43:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:37,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:37,248 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] [2024-10-12 21:43:37,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:43:37,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:37,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -82389213, now seen corresponding path program 1 times [2024-10-12 21:43:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436429671] [2024-10-12 21:43:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:37,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:37,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436429671] [2024-10-12 21:43:37,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436429671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:37,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:37,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63416580] [2024-10-12 21:43:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:37,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:37,355 INFO L87 Difference]: Start difference. First operand 456 states and 674 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:38,143 INFO L93 Difference]: Finished difference Result 730 states and 1060 transitions. [2024-10-12 21:43:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:43:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:38,147 INFO L225 Difference]: With dead ends: 730 [2024-10-12 21:43:38,147 INFO L226 Difference]: Without dead ends: 486 [2024-10-12 21:43:38,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:38,149 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 346 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:38,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1548 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:43:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-12 21:43:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 460. [2024-10-12 21:43:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 369 states have (on average 1.4959349593495934) internal successors, (552), 378 states have internal predecessors, (552), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2024-10-12 21:43:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 676 transitions. [2024-10-12 21:43:38,181 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 676 transitions. Word has length 58 [2024-10-12 21:43:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:38,181 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 676 transitions. [2024-10-12 21:43:38,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 676 transitions. [2024-10-12 21:43:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:38,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:38,184 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] [2024-10-12 21:43:38,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:43:38,184 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:38,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1968594785, now seen corresponding path program 1 times [2024-10-12 21:43:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518732776] [2024-10-12 21:43:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:38,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:38,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518732776] [2024-10-12 21:43:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518732776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:38,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:38,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555503163] [2024-10-12 21:43:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:38,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:38,286 INFO L87 Difference]: Start difference. First operand 460 states and 676 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:39,036 INFO L93 Difference]: Finished difference Result 748 states and 1078 transitions. [2024-10-12 21:43:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:43:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:43:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:39,039 INFO L225 Difference]: With dead ends: 748 [2024-10-12 21:43:39,039 INFO L226 Difference]: Without dead ends: 500 [2024-10-12 21:43:39,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:39,040 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 349 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:39,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1546 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:43:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-10-12 21:43:39,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 472. [2024-10-12 21:43:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 378 states have (on average 1.4841269841269842) internal successors, (561), 387 states have internal predecessors, (561), 57 states have call successors, (57), 29 states have call predecessors, (57), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2024-10-12 21:43:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 688 transitions. [2024-10-12 21:43:39,113 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 688 transitions. Word has length 58 [2024-10-12 21:43:39,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:39,113 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 688 transitions. [2024-10-12 21:43:39,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 688 transitions. [2024-10-12 21:43:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:39,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:39,114 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] [2024-10-12 21:43:39,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:43:39,115 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:39,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2030634399, now seen corresponding path program 1 times [2024-10-12 21:43:39,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:39,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213458209] [2024-10-12 21:43:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213458209] [2024-10-12 21:43:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213458209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781159839] [2024-10-12 21:43:39,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:39,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:39,228 INFO L87 Difference]: Start difference. First operand 472 states and 688 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:40,091 INFO L93 Difference]: Finished difference Result 828 states and 1163 transitions. [2024-10-12 21:43:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:43:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:40,097 INFO L225 Difference]: With dead ends: 828 [2024-10-12 21:43:40,098 INFO L226 Difference]: Without dead ends: 570 [2024-10-12 21:43:40,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:43:40,103 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 1028 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:40,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 980 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-10-12 21:43:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 482. [2024-10-12 21:43:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 386 states have (on average 1.4740932642487046) internal successors, (569), 395 states have internal predecessors, (569), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (69), 60 states have call predecessors, (69), 54 states have call successors, (69) [2024-10-12 21:43:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 696 transitions. [2024-10-12 21:43:40,186 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 696 transitions. Word has length 58 [2024-10-12 21:43:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:40,190 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 696 transitions. [2024-10-12 21:43:40,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 696 transitions. [2024-10-12 21:43:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:40,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:40,191 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] [2024-10-12 21:43:40,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:43:40,192 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:40,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1841631071, now seen corresponding path program 1 times [2024-10-12 21:43:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968039475] [2024-10-12 21:43:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:40,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:40,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968039475] [2024-10-12 21:43:40,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968039475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:40,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:40,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113169430] [2024-10-12 21:43:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:40,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:40,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:40,320 INFO L87 Difference]: Start difference. First operand 482 states and 696 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:40,855 INFO L93 Difference]: Finished difference Result 1064 states and 1480 transitions. [2024-10-12 21:43:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:43:40,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:40,858 INFO L225 Difference]: With dead ends: 1064 [2024-10-12 21:43:40,859 INFO L226 Difference]: Without dead ends: 797 [2024-10-12 21:43:40,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:40,860 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 1013 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:40,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 770 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2024-10-12 21:43:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 743. [2024-10-12 21:43:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.4182444061962134) internal successors, (824), 597 states have internal predecessors, (824), 93 states have call successors, (93), 52 states have call predecessors, (93), 67 states have return successors, (126), 100 states have call predecessors, (126), 89 states have call successors, (126) [2024-10-12 21:43:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1043 transitions. [2024-10-12 21:43:40,895 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1043 transitions. Word has length 58 [2024-10-12 21:43:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:40,895 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1043 transitions. [2024-10-12 21:43:40,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1043 transitions. [2024-10-12 21:43:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:43:40,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:40,897 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] [2024-10-12 21:43:40,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:43:40,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:40,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 96612606, now seen corresponding path program 1 times [2024-10-12 21:43:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085450946] [2024-10-12 21:43:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:40,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085450946] [2024-10-12 21:43:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085450946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:40,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:40,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796838990] [2024-10-12 21:43:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:40,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:40,975 INFO L87 Difference]: Start difference. First operand 743 states and 1043 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:41,471 INFO L93 Difference]: Finished difference Result 1827 states and 2489 transitions. [2024-10-12 21:43:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:43:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2024-10-12 21:43:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:41,481 INFO L225 Difference]: With dead ends: 1827 [2024-10-12 21:43:41,482 INFO L226 Difference]: Without dead ends: 1308 [2024-10-12 21:43:41,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:43:41,484 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 1013 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:41,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 625 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2024-10-12 21:43:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1154. [2024-10-12 21:43:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 892 states have (on average 1.3721973094170403) internal successors, (1224), 915 states have internal predecessors, (1224), 142 states have call successors, (142), 94 states have call predecessors, (142), 118 states have return successors, (196), 151 states have call predecessors, (196), 138 states have call successors, (196) [2024-10-12 21:43:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1562 transitions. [2024-10-12 21:43:41,597 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1562 transitions. Word has length 59 [2024-10-12 21:43:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:41,597 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1562 transitions. [2024-10-12 21:43:41,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1562 transitions. [2024-10-12 21:43:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:43:41,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:41,599 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] [2024-10-12 21:43:41,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:43:41,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:41,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash -211387079, now seen corresponding path program 1 times [2024-10-12 21:43:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:41,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333680956] [2024-10-12 21:43:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:41,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:41,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:41,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333680956] [2024-10-12 21:43:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333680956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:41,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617565350] [2024-10-12 21:43:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:41,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:41,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:41,658 INFO L87 Difference]: Start difference. First operand 1154 states and 1562 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:42,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:42,301 INFO L93 Difference]: Finished difference Result 3114 states and 4121 transitions. [2024-10-12 21:43:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:42,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-10-12 21:43:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:42,309 INFO L225 Difference]: With dead ends: 3114 [2024-10-12 21:43:42,309 INFO L226 Difference]: Without dead ends: 2154 [2024-10-12 21:43:42,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:42,311 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 527 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:42,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 910 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:43:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2024-10-12 21:43:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1970. [2024-10-12 21:43:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1510 states have (on average 1.3364238410596025) internal successors, (2018), 1539 states have internal predecessors, (2018), 236 states have call successors, (236), 180 states have call predecessors, (236), 222 states have return successors, (334), 257 states have call predecessors, (334), 232 states have call successors, (334) [2024-10-12 21:43:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2588 transitions. [2024-10-12 21:43:42,415 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2588 transitions. Word has length 60 [2024-10-12 21:43:42,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:42,415 INFO L471 AbstractCegarLoop]: Abstraction has 1970 states and 2588 transitions. [2024-10-12 21:43:42,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2588 transitions. [2024-10-12 21:43:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 21:43:42,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:42,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:42,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:43:42,417 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:42,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash 630938584, now seen corresponding path program 1 times [2024-10-12 21:43:42,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:42,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160095386] [2024-10-12 21:43:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:42,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:42,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160095386] [2024-10-12 21:43:42,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160095386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:42,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:42,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782647357] [2024-10-12 21:43:42,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:42,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:42,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:42,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:42,465 INFO L87 Difference]: Start difference. First operand 1970 states and 2588 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:43,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:43,090 INFO L93 Difference]: Finished difference Result 4634 states and 5992 transitions. [2024-10-12 21:43:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:43,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-10-12 21:43:43,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:43,102 INFO L225 Difference]: With dead ends: 4634 [2024-10-12 21:43:43,102 INFO L226 Difference]: Without dead ends: 2878 [2024-10-12 21:43:43,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:43,106 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 796 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:43,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 810 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-10-12 21:43:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2636. [2024-10-12 21:43:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2012 states have (on average 1.320079522862823) internal successors, (2656), 2049 states have internal predecessors, (2656), 316 states have call successors, (316), 250 states have call predecessors, (316), 306 states have return successors, (443), 343 states have call predecessors, (443), 312 states have call successors, (443) [2024-10-12 21:43:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3415 transitions. [2024-10-12 21:43:43,323 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3415 transitions. Word has length 66 [2024-10-12 21:43:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:43,323 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 3415 transitions. [2024-10-12 21:43:43,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:43:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3415 transitions. [2024-10-12 21:43:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 21:43:43,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:43,325 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] [2024-10-12 21:43:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:43:43,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:43,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1862777236, now seen corresponding path program 1 times [2024-10-12 21:43:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525644317] [2024-10-12 21:43:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525644317] [2024-10-12 21:43:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525644317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:43,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855677967] [2024-10-12 21:43:43,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:43,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:43,454 INFO L87 Difference]: Start difference. First operand 2636 states and 3415 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:44,274 INFO L93 Difference]: Finished difference Result 3356 states and 4292 transitions. [2024-10-12 21:43:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:43:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 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 67 [2024-10-12 21:43:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:44,288 INFO L225 Difference]: With dead ends: 3356 [2024-10-12 21:43:44,288 INFO L226 Difference]: Without dead ends: 3353 [2024-10-12 21:43:44,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:43:44,290 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 1214 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:44,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 784 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:43:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2024-10-12 21:43:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3086. [2024-10-12 21:43:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2353 states have (on average 1.3106672333191671) internal successors, (3084), 2395 states have internal predecessors, (3084), 366 states have call successors, (366), 294 states have call predecessors, (366), 365 states have return successors, (522), 403 states have call predecessors, (522), 363 states have call successors, (522) [2024-10-12 21:43:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 3972 transitions. [2024-10-12 21:43:44,508 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 3972 transitions. Word has length 67 [2024-10-12 21:43:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:44,509 INFO L471 AbstractCegarLoop]: Abstraction has 3086 states and 3972 transitions. [2024-10-12 21:43:44,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 3972 transitions. [2024-10-12 21:43:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 21:43:44,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:44,511 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] [2024-10-12 21:43:44,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:43:44,511 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:44,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1910565794, now seen corresponding path program 1 times [2024-10-12 21:43:44,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291208246] [2024-10-12 21:43:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:44,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291208246] [2024-10-12 21:43:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291208246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:43:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243550447] [2024-10-12 21:43:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:44,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:43:44,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:43:44,627 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) [2024-10-12 21:43:44,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:43:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:44,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:43:44,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:43:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:44,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:43:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243550447] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:43:45,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:43:45,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-12 21:43:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51153682] [2024-10-12 21:43:45,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:43:45,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:43:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:45,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:43:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:43:45,006 INFO L87 Difference]: Start difference. First operand 3086 states and 3972 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:43:46,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:46,821 INFO L93 Difference]: Finished difference Result 7153 states and 9084 transitions. [2024-10-12 21:43:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-12 21:43:46,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 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 68 [2024-10-12 21:43:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:46,849 INFO L225 Difference]: With dead ends: 7153 [2024-10-12 21:43:46,849 INFO L226 Difference]: Without dead ends: 7150 [2024-10-12 21:43:46,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2024-10-12 21:43:46,851 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 1836 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:46,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 1407 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:43:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7150 states. [2024-10-12 21:43:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7150 to 4712. [2024-10-12 21:43:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 3593 states have (on average 1.3069858057333705) internal successors, (4696), 3657 states have internal predecessors, (4696), 550 states have call successors, (550), 452 states have call predecessors, (550), 567 states have return successors, (800), 609 states have call predecessors, (800), 547 states have call successors, (800) [2024-10-12 21:43:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 6046 transitions. [2024-10-12 21:43:47,276 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 6046 transitions. Word has length 68 [2024-10-12 21:43:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:47,276 INFO L471 AbstractCegarLoop]: Abstraction has 4712 states and 6046 transitions. [2024-10-12 21:43:47,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:43:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 6046 transitions. [2024-10-12 21:43:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 21:43:47,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:47,278 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] [2024-10-12 21:43:47,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:43:47,482 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,SelfDestructingSolverStorable11 [2024-10-12 21:43:47,483 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:47,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash -386332780, now seen corresponding path program 2 times [2024-10-12 21:43:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306860980] [2024-10-12 21:43:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306860980] [2024-10-12 21:43:47,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306860980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:47,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828252943] [2024-10-12 21:43:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:47,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:47,559 INFO L87 Difference]: Start difference. First operand 4712 states and 6046 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:48,288 INFO L93 Difference]: Finished difference Result 7168 states and 9193 transitions. [2024-10-12 21:43:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 21:43:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-10-12 21:43:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:48,302 INFO L225 Difference]: With dead ends: 7168 [2024-10-12 21:43:48,303 INFO L226 Difference]: Without dead ends: 3465 [2024-10-12 21:43:48,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:43:48,310 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 724 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:48,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 878 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:43:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2024-10-12 21:43:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3236. [2024-10-12 21:43:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 2473 states have (on average 1.289122523251112) internal successors, (3188), 2515 states have internal predecessors, (3188), 382 states have call successors, (382), 308 states have call predecessors, (382), 379 states have return successors, (526), 419 states have call predecessors, (526), 379 states have call successors, (526) [2024-10-12 21:43:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 4096 transitions. [2024-10-12 21:43:48,547 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 4096 transitions. Word has length 71 [2024-10-12 21:43:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:48,549 INFO L471 AbstractCegarLoop]: Abstraction has 3236 states and 4096 transitions. [2024-10-12 21:43:48,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:43:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 4096 transitions. [2024-10-12 21:43:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 21:43:48,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:48,551 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:48,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:43:48,551 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:48,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 492720875, now seen corresponding path program 1 times [2024-10-12 21:43:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:48,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665184590] [2024-10-12 21:43:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:43:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:43:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665184590] [2024-10-12 21:43:48,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665184590] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:48,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683951452] [2024-10-12 21:43:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:48,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:48,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:48,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:48,691 INFO L87 Difference]: Start difference. First operand 3236 states and 4096 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:50,157 INFO L93 Difference]: Finished difference Result 9518 states and 11903 transitions. [2024-10-12 21:43:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:43:50,157 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-10-12 21:43:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:50,177 INFO L225 Difference]: With dead ends: 9518 [2024-10-12 21:43:50,177 INFO L226 Difference]: Without dead ends: 5297 [2024-10-12 21:43:50,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:43:50,185 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 956 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:50,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1205 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:50,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2024-10-12 21:43:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 4977. [2024-10-12 21:43:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4977 states, 3757 states have (on average 1.2619110992813416) internal successors, (4741), 3842 states have internal predecessors, (4741), 586 states have call successors, (586), 482 states have call predecessors, (586), 632 states have return successors, (908), 659 states have call predecessors, (908), 583 states have call successors, (908) [2024-10-12 21:43:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 6235 transitions. [2024-10-12 21:43:50,583 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 6235 transitions. Word has length 76 [2024-10-12 21:43:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:50,583 INFO L471 AbstractCegarLoop]: Abstraction has 4977 states and 6235 transitions. [2024-10-12 21:43:50,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 6235 transitions. [2024-10-12 21:43:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:43:50,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:50,586 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-10-12 21:43:50,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:43:50,586 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:50,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:50,587 INFO L85 PathProgramCache]: Analyzing trace with hash 533862617, now seen corresponding path program 1 times [2024-10-12 21:43:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:50,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525055514] [2024-10-12 21:43:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:50,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:43:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:43:50,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:50,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525055514] [2024-10-12 21:43:50,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525055514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:50,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098619841] [2024-10-12 21:43:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:50,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:50,677 INFO L87 Difference]: Start difference. First operand 4977 states and 6235 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:51,897 INFO L93 Difference]: Finished difference Result 8648 states and 10743 transitions. [2024-10-12 21:43:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 21:43:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 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 86 [2024-10-12 21:43:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:51,922 INFO L225 Difference]: With dead ends: 8648 [2024-10-12 21:43:51,922 INFO L226 Difference]: Without dead ends: 4468 [2024-10-12 21:43:51,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:43:51,936 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 1623 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:51,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1044 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:43:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2024-10-12 21:43:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4134. [2024-10-12 21:43:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 3127 states have (on average 1.253917492804605) internal successors, (3921), 3194 states have internal predecessors, (3921), 487 states have call successors, (487), 397 states have call predecessors, (487), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2024-10-12 21:43:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 5094 transitions. [2024-10-12 21:43:52,300 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 5094 transitions. Word has length 86 [2024-10-12 21:43:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:52,301 INFO L471 AbstractCegarLoop]: Abstraction has 4134 states and 5094 transitions. [2024-10-12 21:43:52,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:43:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 5094 transitions. [2024-10-12 21:43:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:43:52,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:52,305 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] [2024-10-12 21:43:52,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:43:52,306 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:52,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1696227257, now seen corresponding path program 1 times [2024-10-12 21:43:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694777400] [2024-10-12 21:43:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:43:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:43:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:43:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:43:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:52,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694777400] [2024-10-12 21:43:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694777400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:52,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:52,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:43:52,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616442413] [2024-10-12 21:43:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:52,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:43:52,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:52,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:43:52,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:43:52,390 INFO L87 Difference]: Start difference. First operand 4134 states and 5094 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:53,652 INFO L93 Difference]: Finished difference Result 4378 states and 5490 transitions. [2024-10-12 21:43:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:43:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:43:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:53,669 INFO L225 Difference]: With dead ends: 4378 [2024-10-12 21:43:53,670 INFO L226 Difference]: Without dead ends: 4194 [2024-10-12 21:43:53,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:53,672 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 588 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:53,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 572 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:43:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2024-10-12 21:43:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 4134. [2024-10-12 21:43:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 3127 states have (on average 1.253597697473617) internal successors, (3920), 3194 states have internal predecessors, (3920), 487 states have call successors, (487), 397 states have call predecessors, (487), 518 states have return successors, (686), 549 states have call predecessors, (686), 484 states have call successors, (686) [2024-10-12 21:43:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 5093 transitions. [2024-10-12 21:43:54,258 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 5093 transitions. Word has length 92 [2024-10-12 21:43:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:54,258 INFO L471 AbstractCegarLoop]: Abstraction has 4134 states and 5093 transitions. [2024-10-12 21:43:54,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 5093 transitions. [2024-10-12 21:43:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:43:54,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:54,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:54,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:43:54,262 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:54,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 129469307, now seen corresponding path program 1 times [2024-10-12 21:43:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:54,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595698564] [2024-10-12 21:43:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:43:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:43:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:43:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:43:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595698564] [2024-10-12 21:43:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595698564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:54,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261051101] [2024-10-12 21:43:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:54,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:54,407 INFO L87 Difference]: Start difference. First operand 4134 states and 5093 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:55,976 INFO L93 Difference]: Finished difference Result 4621 states and 5885 transitions. [2024-10-12 21:43:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:43:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:43:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:55,989 INFO L225 Difference]: With dead ends: 4621 [2024-10-12 21:43:55,989 INFO L226 Difference]: Without dead ends: 4440 [2024-10-12 21:43:55,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:55,991 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 936 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:55,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 797 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:43:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2024-10-12 21:43:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4319. [2024-10-12 21:43:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4319 states, 3291 states have (on average 1.2716499544211486) internal successors, (4185), 3359 states have internal predecessors, (4185), 501 states have call successors, (501), 403 states have call predecessors, (501), 525 states have return successors, (703), 563 states have call predecessors, (703), 498 states have call successors, (703) [2024-10-12 21:43:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 5389 transitions. [2024-10-12 21:43:56,551 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 5389 transitions. Word has length 92 [2024-10-12 21:43:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:56,552 INFO L471 AbstractCegarLoop]: Abstraction has 4319 states and 5389 transitions. [2024-10-12 21:43:56,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 5389 transitions. [2024-10-12 21:43:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:43:56,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:56,555 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] [2024-10-12 21:43:56,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:43:56,556 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:56,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash 968502969, now seen corresponding path program 1 times [2024-10-12 21:43:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:56,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021966514] [2024-10-12 21:43:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:43:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:43:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:43:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:43:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:56,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021966514] [2024-10-12 21:43:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021966514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:56,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074712986] [2024-10-12 21:43:56,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:56,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:56,661 INFO L87 Difference]: Start difference. First operand 4319 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:58,809 INFO L93 Difference]: Finished difference Result 5058 states and 6589 transitions. [2024-10-12 21:43:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:43:58,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:43:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:58,829 INFO L225 Difference]: With dead ends: 5058 [2024-10-12 21:43:58,829 INFO L226 Difference]: Without dead ends: 4692 [2024-10-12 21:43:58,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:43:58,833 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 949 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:58,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1387 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 21:43:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2024-10-12 21:43:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 4492. [2024-10-12 21:43:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3443 states have (on average 1.2855068254429276) internal successors, (4426), 3512 states have internal predecessors, (4426), 515 states have call successors, (515), 409 states have call predecessors, (515), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2024-10-12 21:43:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 5660 transitions. [2024-10-12 21:43:59,478 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 5660 transitions. Word has length 92 [2024-10-12 21:43:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:59,479 INFO L471 AbstractCegarLoop]: Abstraction has 4492 states and 5660 transitions. [2024-10-12 21:43:59,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:43:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 5660 transitions. [2024-10-12 21:43:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:43:59,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:59,482 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] [2024-10-12 21:43:59,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:43:59,482 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:59,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1108833929, now seen corresponding path program 1 times [2024-10-12 21:43:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:59,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752108294] [2024-10-12 21:43:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:59,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:43:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:43:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:43:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:43:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752108294] [2024-10-12 21:43:59,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752108294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:59,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:59,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:43:59,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336767242] [2024-10-12 21:43:59,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:59,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:43:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:43:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:43:59,599 INFO L87 Difference]: Start difference. First operand 4492 states and 5660 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:00,890 INFO L93 Difference]: Finished difference Result 5233 states and 6870 transitions. [2024-10-12 21:44:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:00,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:00,903 INFO L225 Difference]: With dead ends: 5233 [2024-10-12 21:44:00,903 INFO L226 Difference]: Without dead ends: 4694 [2024-10-12 21:44:00,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:00,905 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 746 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:00,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 809 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2024-10-12 21:44:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4492. [2024-10-12 21:44:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3443 states have (on average 1.284635492303224) internal successors, (4423), 3512 states have internal predecessors, (4423), 515 states have call successors, (515), 409 states have call predecessors, (515), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2024-10-12 21:44:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 5657 transitions. [2024-10-12 21:44:01,479 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 5657 transitions. Word has length 92 [2024-10-12 21:44:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:01,479 INFO L471 AbstractCegarLoop]: Abstraction has 4492 states and 5657 transitions. [2024-10-12 21:44:01,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 5657 transitions. [2024-10-12 21:44:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:01,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:01,482 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] [2024-10-12 21:44:01,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:44:01,483 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 625270521, now seen corresponding path program 1 times [2024-10-12 21:44:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117666700] [2024-10-12 21:44:01,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:01,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:01,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117666700] [2024-10-12 21:44:01,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117666700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:01,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:01,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:01,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566510000] [2024-10-12 21:44:01,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:01,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:01,614 INFO L87 Difference]: Start difference. First operand 4492 states and 5657 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:03,028 INFO L93 Difference]: Finished difference Result 5229 states and 6853 transitions. [2024-10-12 21:44:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:03,042 INFO L225 Difference]: With dead ends: 5229 [2024-10-12 21:44:03,042 INFO L226 Difference]: Without dead ends: 4690 [2024-10-12 21:44:03,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:03,048 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 867 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:03,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 670 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2024-10-12 21:44:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 4492. [2024-10-12 21:44:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3443 states have (on average 1.2837641591635203) internal successors, (4420), 3512 states have internal predecessors, (4420), 515 states have call successors, (515), 409 states have call predecessors, (515), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2024-10-12 21:44:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 5654 transitions. [2024-10-12 21:44:03,833 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 5654 transitions. Word has length 92 [2024-10-12 21:44:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:03,834 INFO L471 AbstractCegarLoop]: Abstraction has 4492 states and 5654 transitions. [2024-10-12 21:44:03,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:03,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 5654 transitions. [2024-10-12 21:44:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:03,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:03,839 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] [2024-10-12 21:44:03,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:44:03,840 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:03,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1512493367, now seen corresponding path program 1 times [2024-10-12 21:44:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:03,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483026178] [2024-10-12 21:44:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483026178] [2024-10-12 21:44:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483026178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:03,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022296916] [2024-10-12 21:44:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:03,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:03,993 INFO L87 Difference]: Start difference. First operand 4492 states and 5654 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:05,543 INFO L93 Difference]: Finished difference Result 5225 states and 6836 transitions. [2024-10-12 21:44:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:05,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:05,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:05,567 INFO L225 Difference]: With dead ends: 5225 [2024-10-12 21:44:05,571 INFO L226 Difference]: Without dead ends: 4686 [2024-10-12 21:44:05,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:05,574 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 865 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:05,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 670 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2024-10-12 21:44:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4492. [2024-10-12 21:44:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 3443 states have (on average 1.2828928260238164) internal successors, (4417), 3512 states have internal predecessors, (4417), 515 states have call successors, (515), 409 states have call predecessors, (515), 532 states have return successors, (719), 578 states have call predecessors, (719), 512 states have call successors, (719) [2024-10-12 21:44:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 5651 transitions. [2024-10-12 21:44:06,140 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 5651 transitions. Word has length 92 [2024-10-12 21:44:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:06,141 INFO L471 AbstractCegarLoop]: Abstraction has 4492 states and 5651 transitions. [2024-10-12 21:44:06,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 5651 transitions. [2024-10-12 21:44:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:06,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:06,144 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] [2024-10-12 21:44:06,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:44:06,144 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:06,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -398549191, now seen corresponding path program 1 times [2024-10-12 21:44:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537022504] [2024-10-12 21:44:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:06,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537022504] [2024-10-12 21:44:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537022504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:06,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473223276] [2024-10-12 21:44:06,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:06,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:06,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:06,249 INFO L87 Difference]: Start difference. First operand 4492 states and 5651 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:08,417 INFO L93 Difference]: Finished difference Result 5820 states and 7760 transitions. [2024-10-12 21:44:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:08,434 INFO L225 Difference]: With dead ends: 5820 [2024-10-12 21:44:08,434 INFO L226 Difference]: Without dead ends: 5281 [2024-10-12 21:44:08,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:08,438 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 970 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:08,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1378 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 21:44:08,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2024-10-12 21:44:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 4846. [2024-10-12 21:44:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 3757 states have (on average 1.3063614586105936) internal successors, (4908), 3828 states have internal predecessors, (4908), 541 states have call successors, (541), 421 states have call predecessors, (541), 546 states have return successors, (753), 606 states have call predecessors, (753), 538 states have call successors, (753) [2024-10-12 21:44:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6202 transitions. [2024-10-12 21:44:09,104 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6202 transitions. Word has length 92 [2024-10-12 21:44:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:09,104 INFO L471 AbstractCegarLoop]: Abstraction has 4846 states and 6202 transitions. [2024-10-12 21:44:09,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6202 transitions. [2024-10-12 21:44:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:09,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:09,107 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] [2024-10-12 21:44:09,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:44:09,107 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:09,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -321648393, now seen corresponding path program 1 times [2024-10-12 21:44:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721351248] [2024-10-12 21:44:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721351248] [2024-10-12 21:44:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721351248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276194820] [2024-10-12 21:44:09,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:09,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:09,210 INFO L87 Difference]: Start difference. First operand 4846 states and 6202 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:11,291 INFO L93 Difference]: Finished difference Result 7138 states and 9829 transitions. [2024-10-12 21:44:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:11,304 INFO L225 Difference]: With dead ends: 7138 [2024-10-12 21:44:11,304 INFO L226 Difference]: Without dead ends: 6245 [2024-10-12 21:44:11,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:11,307 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 1075 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:11,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1374 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 21:44:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2024-10-12 21:44:11,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5507. [2024-10-12 21:44:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 4340 states have (on average 1.3382488479262673) internal successors, (5808), 4415 states have internal predecessors, (5808), 591 states have call successors, (591), 445 states have call predecessors, (591), 574 states have return successors, (825), 660 states have call predecessors, (825), 588 states have call successors, (825) [2024-10-12 21:44:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 7224 transitions. [2024-10-12 21:44:11,946 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 7224 transitions. Word has length 92 [2024-10-12 21:44:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:11,946 INFO L471 AbstractCegarLoop]: Abstraction has 5507 states and 7224 transitions. [2024-10-12 21:44:11,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 7224 transitions. [2024-10-12 21:44:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:11,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:11,950 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] [2024-10-12 21:44:11,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 21:44:11,950 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:11,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1288999047, now seen corresponding path program 1 times [2024-10-12 21:44:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852814878] [2024-10-12 21:44:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:12,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852814878] [2024-10-12 21:44:12,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852814878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:12,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:12,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:12,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544068528] [2024-10-12 21:44:12,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:12,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:12,037 INFO L87 Difference]: Start difference. First operand 5507 states and 7224 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:13,741 INFO L93 Difference]: Finished difference Result 7515 states and 10413 transitions. [2024-10-12 21:44:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:13,768 INFO L225 Difference]: With dead ends: 7515 [2024-10-12 21:44:13,768 INFO L226 Difference]: Without dead ends: 5961 [2024-10-12 21:44:13,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:13,781 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 759 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:13,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 807 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2024-10-12 21:44:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5507. [2024-10-12 21:44:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 4340 states have (on average 1.3361751152073733) internal successors, (5799), 4415 states have internal predecessors, (5799), 591 states have call successors, (591), 445 states have call predecessors, (591), 574 states have return successors, (825), 660 states have call predecessors, (825), 588 states have call successors, (825) [2024-10-12 21:44:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 7215 transitions. [2024-10-12 21:44:14,504 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 7215 transitions. Word has length 92 [2024-10-12 21:44:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:14,505 INFO L471 AbstractCegarLoop]: Abstraction has 5507 states and 7215 transitions. [2024-10-12 21:44:14,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 7215 transitions. [2024-10-12 21:44:14,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:14,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:14,509 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] [2024-10-12 21:44:14,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 21:44:14,509 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:14,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:14,510 INFO L85 PathProgramCache]: Analyzing trace with hash 619458743, now seen corresponding path program 1 times [2024-10-12 21:44:14,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:14,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123012661] [2024-10-12 21:44:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:14,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123012661] [2024-10-12 21:44:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123012661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:14,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161169103] [2024-10-12 21:44:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:14,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:14,643 INFO L87 Difference]: Start difference. First operand 5507 states and 7215 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:16,772 INFO L93 Difference]: Finished difference Result 9381 states and 13289 transitions. [2024-10-12 21:44:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:16,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:16,795 INFO L225 Difference]: With dead ends: 9381 [2024-10-12 21:44:16,795 INFO L226 Difference]: Without dead ends: 7827 [2024-10-12 21:44:16,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:16,803 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 965 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:16,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1378 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:44:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2024-10-12 21:44:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 6886. [2024-10-12 21:44:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6886 states, 5567 states have (on average 1.3826118196515178) internal successors, (7697), 5650 states have internal predecessors, (7697), 687 states have call successors, (687), 493 states have call predecessors, (687), 630 states have return successors, (983), 764 states have call predecessors, (983), 684 states have call successors, (983) [2024-10-12 21:44:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6886 states to 6886 states and 9367 transitions. [2024-10-12 21:44:17,604 INFO L78 Accepts]: Start accepts. Automaton has 6886 states and 9367 transitions. Word has length 92 [2024-10-12 21:44:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:17,604 INFO L471 AbstractCegarLoop]: Abstraction has 6886 states and 9367 transitions. [2024-10-12 21:44:17,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6886 states and 9367 transitions. [2024-10-12 21:44:17,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:17,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:17,608 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] [2024-10-12 21:44:17,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 21:44:17,609 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:17,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1573398901, now seen corresponding path program 1 times [2024-10-12 21:44:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161964882] [2024-10-12 21:44:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161964882] [2024-10-12 21:44:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161964882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393890466] [2024-10-12 21:44:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:17,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:17,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:17,720 INFO L87 Difference]: Start difference. First operand 6886 states and 9367 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:19,177 INFO L93 Difference]: Finished difference Result 10555 states and 15164 transitions. [2024-10-12 21:44:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:19,198 INFO L225 Difference]: With dead ends: 10555 [2024-10-12 21:44:19,199 INFO L226 Difference]: Without dead ends: 7622 [2024-10-12 21:44:19,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:19,207 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 863 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:19,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 669 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2024-10-12 21:44:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 6886. [2024-10-12 21:44:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6886 states, 5567 states have (on average 1.3795581102927967) internal successors, (7680), 5650 states have internal predecessors, (7680), 687 states have call successors, (687), 493 states have call predecessors, (687), 630 states have return successors, (983), 764 states have call predecessors, (983), 684 states have call successors, (983) [2024-10-12 21:44:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6886 states to 6886 states and 9350 transitions. [2024-10-12 21:44:20,051 INFO L78 Accepts]: Start accepts. Automaton has 6886 states and 9350 transitions. Word has length 92 [2024-10-12 21:44:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:20,051 INFO L471 AbstractCegarLoop]: Abstraction has 6886 states and 9350 transitions. [2024-10-12 21:44:20,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6886 states and 9350 transitions. [2024-10-12 21:44:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:20,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:20,059 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] [2024-10-12 21:44:20,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 21:44:20,063 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:20,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 357245175, now seen corresponding path program 1 times [2024-10-12 21:44:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:20,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850835808] [2024-10-12 21:44:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:20,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:20,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850835808] [2024-10-12 21:44:20,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850835808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:20,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:20,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:20,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112395955] [2024-10-12 21:44:20,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:20,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:20,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:20,175 INFO L87 Difference]: Start difference. First operand 6886 states and 9350 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:21,769 INFO L93 Difference]: Finished difference Result 10552 states and 15140 transitions. [2024-10-12 21:44:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:21,790 INFO L225 Difference]: With dead ends: 10552 [2024-10-12 21:44:21,791 INFO L226 Difference]: Without dead ends: 7620 [2024-10-12 21:44:21,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:21,801 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 332 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:21,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 916 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2024-10-12 21:44:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 6920. [2024-10-12 21:44:22,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6920 states, 5601 states have (on average 1.3772540617746831) internal successors, (7714), 5684 states have internal predecessors, (7714), 687 states have call successors, (687), 493 states have call predecessors, (687), 630 states have return successors, (983), 764 states have call predecessors, (983), 684 states have call successors, (983) [2024-10-12 21:44:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 9384 transitions. [2024-10-12 21:44:22,666 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 9384 transitions. Word has length 92 [2024-10-12 21:44:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:22,666 INFO L471 AbstractCegarLoop]: Abstraction has 6920 states and 9384 transitions. [2024-10-12 21:44:22,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 9384 transitions. [2024-10-12 21:44:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 21:44:22,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:22,673 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] [2024-10-12 21:44:22,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:44:22,674 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:22,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 917944953, now seen corresponding path program 1 times [2024-10-12 21:44:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970239915] [2024-10-12 21:44:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:22,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970239915] [2024-10-12 21:44:22,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970239915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:22,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:22,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:22,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675434904] [2024-10-12 21:44:22,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:22,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:22,869 INFO L87 Difference]: Start difference. First operand 6920 states and 9384 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:25,843 INFO L93 Difference]: Finished difference Result 17602 states and 26419 transitions. [2024-10-12 21:44:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 21:44:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 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 92 [2024-10-12 21:44:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:25,884 INFO L225 Difference]: With dead ends: 17602 [2024-10-12 21:44:25,884 INFO L226 Difference]: Without dead ends: 14636 [2024-10-12 21:44:25,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:44:25,900 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 1973 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:25,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 1150 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 21:44:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14636 states. [2024-10-12 21:44:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14636 to 12630. [2024-10-12 21:44:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 10642 states have (on average 1.4431497838752114) internal successors, (15358), 10784 states have internal predecessors, (15358), 1114 states have call successors, (1114), 703 states have call predecessors, (1114), 872 states have return successors, (1734), 1164 states have call predecessors, (1734), 1111 states have call successors, (1734) [2024-10-12 21:44:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 18206 transitions. [2024-10-12 21:44:27,195 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 18206 transitions. Word has length 92 [2024-10-12 21:44:27,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:27,196 INFO L471 AbstractCegarLoop]: Abstraction has 12630 states and 18206 transitions. [2024-10-12 21:44:27,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 18206 transitions. [2024-10-12 21:44:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 21:44:27,206 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:27,206 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:27,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 21:44:27,207 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:27,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash 73622291, now seen corresponding path program 1 times [2024-10-12 21:44:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200754445] [2024-10-12 21:44:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-12 21:44:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-12 21:44:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-12 21:44:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 21:44:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-12 21:44:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-12 21:44:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 21:44:27,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200754445] [2024-10-12 21:44:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200754445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470697039] [2024-10-12 21:44:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:27,354 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) [2024-10-12 21:44:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:44:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:27,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 21:44:27,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 21:44:27,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470697039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:27,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-10-12 21:44:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978259921] [2024-10-12 21:44:27,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:27,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:27,494 INFO L87 Difference]: Start difference. First operand 12630 states and 18206 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-10-12 21:44:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:28,416 INFO L93 Difference]: Finished difference Result 14477 states and 20459 transitions. [2024-10-12 21:44:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 21:44:28,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 131 [2024-10-12 21:44:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:28,444 INFO L225 Difference]: With dead ends: 14477 [2024-10-12 21:44:28,444 INFO L226 Difference]: Without dead ends: 10561 [2024-10-12 21:44:28,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-12 21:44:28,456 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:28,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1918 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:44:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10561 states. [2024-10-12 21:44:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10561 to 10561. [2024-10-12 21:44:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10561 states, 9150 states have (on average 1.4753005464480875) internal successors, (13499), 9241 states have internal predecessors, (13499), 838 states have call successors, (838), 469 states have call predecessors, (838), 571 states have return successors, (1341), 866 states have call predecessors, (1341), 835 states have call successors, (1341) [2024-10-12 21:44:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10561 states to 10561 states and 15678 transitions. [2024-10-12 21:44:29,648 INFO L78 Accepts]: Start accepts. Automaton has 10561 states and 15678 transitions. Word has length 131 [2024-10-12 21:44:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:29,648 INFO L471 AbstractCegarLoop]: Abstraction has 10561 states and 15678 transitions. [2024-10-12 21:44:29,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-10-12 21:44:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 10561 states and 15678 transitions. [2024-10-12 21:44:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-12 21:44:29,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:29,657 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] [2024-10-12 21:44:29,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 21:44:29,857 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,SelfDestructingSolverStorable28 [2024-10-12 21:44:29,858 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:29,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1340409721, now seen corresponding path program 1 times [2024-10-12 21:44:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598150807] [2024-10-12 21:44:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-12 21:44:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-12 21:44:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-12 21:44:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-12 21:44:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 21:44:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-12 21:44:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:29,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598150807] [2024-10-12 21:44:29,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598150807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:29,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117363628] [2024-10-12 21:44:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:29,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:29,910 INFO L87 Difference]: Start difference. First operand 10561 states and 15678 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:44:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:30,993 INFO L93 Difference]: Finished difference Result 10626 states and 15746 transitions. [2024-10-12 21:44:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 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 133 [2024-10-12 21:44:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:31,019 INFO L225 Difference]: With dead ends: 10626 [2024-10-12 21:44:31,019 INFO L226 Difference]: Without dead ends: 10224 [2024-10-12 21:44:31,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:31,025 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 439 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:31,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 861 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 21:44:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10224 states. [2024-10-12 21:44:31,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10224 to 10162. [2024-10-12 21:44:31,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 8847 states have (on average 1.484797106363739) internal successors, (13136), 8935 states have internal predecessors, (13136), 792 states have call successors, (792), 429 states have call predecessors, (792), 521 states have return successors, (1277), 813 states have call predecessors, (1277), 789 states have call successors, (1277) [2024-10-12 21:44:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 15205 transitions. [2024-10-12 21:44:31,884 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 15205 transitions. Word has length 133 [2024-10-12 21:44:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:31,884 INFO L471 AbstractCegarLoop]: Abstraction has 10162 states and 15205 transitions. [2024-10-12 21:44:31,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 21:44:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 15205 transitions. [2024-10-12 21:44:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-12 21:44:31,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:31,894 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:31,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 21:44:31,894 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:31,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -950095919, now seen corresponding path program 1 times [2024-10-12 21:44:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:31,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244765817] [2024-10-12 21:44:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:31,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 21:44:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:44:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-12 21:44:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:44:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-12 21:44:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-12 21:44:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-12 21:44:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 21:44:31,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:31,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244765817] [2024-10-12 21:44:31,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244765817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:31,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:31,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:31,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241224699] [2024-10-12 21:44:31,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:31,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:31,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:31,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:31,985 INFO L87 Difference]: Start difference. First operand 10162 states and 15205 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-12 21:44:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:33,214 INFO L93 Difference]: Finished difference Result 11509 states and 16874 transitions. [2024-10-12 21:44:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 21:44:33,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 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 145 [2024-10-12 21:44:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:33,237 INFO L225 Difference]: With dead ends: 11509 [2024-10-12 21:44:33,237 INFO L226 Difference]: Without dead ends: 10269 [2024-10-12 21:44:33,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:33,241 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 371 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:33,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1192 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 21:44:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10269 states. [2024-10-12 21:44:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10269 to 10087. [2024-10-12 21:44:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10087 states, 8794 states have (on average 1.4858994769160792) internal successors, (13067), 8883 states have internal predecessors, (13067), 783 states have call successors, (783), 424 states have call predecessors, (783), 508 states have return successors, (1261), 795 states have call predecessors, (1261), 780 states have call successors, (1261) [2024-10-12 21:44:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10087 states to 10087 states and 15111 transitions. [2024-10-12 21:44:34,016 INFO L78 Accepts]: Start accepts. Automaton has 10087 states and 15111 transitions. Word has length 145 [2024-10-12 21:44:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:34,016 INFO L471 AbstractCegarLoop]: Abstraction has 10087 states and 15111 transitions. [2024-10-12 21:44:34,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-10-12 21:44:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 10087 states and 15111 transitions. [2024-10-12 21:44:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 21:44:34,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:34,026 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:34,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-12 21:44:34,027 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:34,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1799056812, now seen corresponding path program 1 times [2024-10-12 21:44:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:34,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780990070] [2024-10-12 21:44:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-12 21:44:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:44:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-12 21:44:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-12 21:44:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-12 21:44:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-12 21:44:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-12 21:44:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-12 21:44:34,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:34,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780990070] [2024-10-12 21:44:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780990070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:34,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060869829] [2024-10-12 21:44:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:34,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:34,186 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) [2024-10-12 21:44:34,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:44:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:34,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 21:44:34,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 21:44:34,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:44:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-12 21:44:34,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060869829] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:44:34,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:44:34,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-10-12 21:44:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128270597] [2024-10-12 21:44:34,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:44:34,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 21:44:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 21:44:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-12 21:44:34,641 INFO L87 Difference]: Start difference. First operand 10087 states and 15111 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-10-12 21:44:36,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:36,373 INFO L93 Difference]: Finished difference Result 11894 states and 17399 transitions. [2024-10-12 21:44:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-12 21:44:36,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2024-10-12 21:44:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:36,398 INFO L225 Difference]: With dead ends: 11894 [2024-10-12 21:44:36,399 INFO L226 Difference]: Without dead ends: 10592 [2024-10-12 21:44:36,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-10-12 21:44:36,405 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 1275 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:36,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 892 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2024-10-12 21:44:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10448. [2024-10-12 21:44:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10448 states, 9043 states have (on average 1.4752847506358509) internal successors, (13341), 9140 states have internal predecessors, (13341), 837 states have call successors, (837), 474 states have call predecessors, (837), 566 states have return successors, (1375), 849 states have call predecessors, (1375), 834 states have call successors, (1375) [2024-10-12 21:44:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10448 states to 10448 states and 15553 transitions. [2024-10-12 21:44:37,291 INFO L78 Accepts]: Start accepts. Automaton has 10448 states and 15553 transitions. Word has length 147 [2024-10-12 21:44:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:37,292 INFO L471 AbstractCegarLoop]: Abstraction has 10448 states and 15553 transitions. [2024-10-12 21:44:37,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-10-12 21:44:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10448 states and 15553 transitions. [2024-10-12 21:44:37,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 21:44:37,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:37,301 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 21:44:37,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 21:44:37,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:37,502 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:37,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -464187984, now seen corresponding path program 1 times [2024-10-12 21:44:37,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:37,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228661862] [2024-10-12 21:44:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:44:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:44:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:44:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:44:37,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228661862] [2024-10-12 21:44:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228661862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403503153] [2024-10-12 21:44:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:37,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:37,651 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) [2024-10-12 21:44:37,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:44:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:44:37,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 21:44:37,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403503153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:37,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:37,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:44:37,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293711370] [2024-10-12 21:44:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:44:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:44:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:37,826 INFO L87 Difference]: Start difference. First operand 10448 states and 15553 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:39,263 INFO L93 Difference]: Finished difference Result 27639 states and 42545 transitions. [2024-10-12 21:44:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:44:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-10-12 21:44:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:39,304 INFO L225 Difference]: With dead ends: 27639 [2024-10-12 21:44:39,305 INFO L226 Difference]: Without dead ends: 18963 [2024-10-12 21:44:39,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:39,320 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 363 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:39,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 633 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:44:39,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18963 states. [2024-10-12 21:44:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18963 to 18907. [2024-10-12 21:44:40,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18907 states, 16528 states have (on average 1.4935866408518876) internal successors, (24686), 16700 states have internal predecessors, (24686), 1451 states have call successors, (1451), 786 states have call predecessors, (1451), 926 states have return successors, (2380), 1436 states have call predecessors, (2380), 1448 states have call successors, (2380) [2024-10-12 21:44:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18907 states to 18907 states and 28517 transitions. [2024-10-12 21:44:40,802 INFO L78 Accepts]: Start accepts. Automaton has 18907 states and 28517 transitions. Word has length 148 [2024-10-12 21:44:40,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:40,802 INFO L471 AbstractCegarLoop]: Abstraction has 18907 states and 28517 transitions. [2024-10-12 21:44:40,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 18907 states and 28517 transitions. [2024-10-12 21:44:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 21:44:40,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:40,818 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 21:44:40,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 21:44:41,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:41,019 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:41,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1366017650, now seen corresponding path program 1 times [2024-10-12 21:44:41,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:41,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489110786] [2024-10-12 21:44:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:41,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:44:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:44:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:44:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:44:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489110786] [2024-10-12 21:44:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489110786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:41,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087924682] [2024-10-12 21:44:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:41,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:41,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:44:41,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:44:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:44:41,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 21:44:41,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087924682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-12 21:44:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419697975] [2024-10-12 21:44:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:41,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:44:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:44:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:41,246 INFO L87 Difference]: Start difference. First operand 18907 states and 28517 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:44,004 INFO L93 Difference]: Finished difference Result 52760 states and 81372 transitions. [2024-10-12 21:44:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:44:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2024-10-12 21:44:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:44,199 INFO L225 Difference]: With dead ends: 52760 [2024-10-12 21:44:44,199 INFO L226 Difference]: Without dead ends: 35625 [2024-10-12 21:44:44,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:44,243 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 358 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:44,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 631 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:44:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35625 states. [2024-10-12 21:44:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35625 to 35517. [2024-10-12 21:44:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35517 states, 31266 states have (on average 1.502846542570204) internal successors, (46988), 31588 states have internal predecessors, (46988), 2603 states have call successors, (2603), 1410 states have call predecessors, (2603), 1646 states have return successors, (4275), 2534 states have call predecessors, (4275), 2600 states have call successors, (4275) [2024-10-12 21:44:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35517 states to 35517 states and 53866 transitions. [2024-10-12 21:44:46,970 INFO L78 Accepts]: Start accepts. Automaton has 35517 states and 53866 transitions. Word has length 148 [2024-10-12 21:44:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:46,972 INFO L471 AbstractCegarLoop]: Abstraction has 35517 states and 53866 transitions. [2024-10-12 21:44:46,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 35517 states and 53866 transitions. [2024-10-12 21:44:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 21:44:47,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:47,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 21:44:47,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 21:44:47,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-12 21:44:47,203 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:47,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2026970224, now seen corresponding path program 1 times [2024-10-12 21:44:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:47,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547368112] [2024-10-12 21:44:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 21:44:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-12 21:44:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-12 21:44:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 21:44:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-12 21:44:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 21:44:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547368112] [2024-10-12 21:44:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547368112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422893317] [2024-10-12 21:44:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:47,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:47,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:44:47,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 21:44:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:47,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 21:44:47,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-12 21:44:47,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422893317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:47,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 21:44:47,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878926359] [2024-10-12 21:44:47,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:47,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:44:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:47,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:44:47,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:47,462 INFO L87 Difference]: Start difference. First operand 35517 states and 53866 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:44:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:52,643 INFO L93 Difference]: Finished difference Result 101766 states and 155996 transitions. [2024-10-12 21:44:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:44:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 148 [2024-10-12 21:44:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:52,761 INFO L225 Difference]: With dead ends: 101766 [2024-10-12 21:44:52,762 INFO L226 Difference]: Without dead ends: 41369 [2024-10-12 21:44:52,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:52,852 INFO L432 NwaCegarLoop]: 619 mSDtfsCounter, 253 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:52,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1003 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:44:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41369 states. [2024-10-12 21:44:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41369 to 41369. [2024-10-12 21:44:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41369 states, 36458 states have (on average 1.5034011739535904) internal successors, (54811), 36812 states have internal predecessors, (54811), 3015 states have call successors, (3015), 1626 states have call predecessors, (3015), 1894 states have return successors, (4995), 2946 states have call predecessors, (4995), 3012 states have call successors, (4995) [2024-10-12 21:44:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41369 states to 41369 states and 62821 transitions. [2024-10-12 21:44:56,667 INFO L78 Accepts]: Start accepts. Automaton has 41369 states and 62821 transitions. Word has length 148 [2024-10-12 21:44:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:56,668 INFO L471 AbstractCegarLoop]: Abstraction has 41369 states and 62821 transitions. [2024-10-12 21:44:56,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-12 21:44:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 41369 states and 62821 transitions. [2024-10-12 21:44:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 21:44:56,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:56,705 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:56,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 21:44:56,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:56,906 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:56,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash -615933476, now seen corresponding path program 1 times [2024-10-12 21:44:56,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:56,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557402836] [2024-10-12 21:44:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-12 21:44:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 21:44:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-12 21:44:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-12 21:44:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-12 21:44:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-12 21:44:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-12 21:44:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-12 21:44:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:56,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-12 21:44:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:57,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-12 21:44:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:57,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-12 21:44:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-10-12 21:44:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557402836] [2024-10-12 21:44:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557402836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38446840] [2024-10-12 21:44:57,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:57,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:57,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:57,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:44:57,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 21:44:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:57,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 21:44:57,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-12 21:44:57,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 21:44:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38446840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:57,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 21:44:57,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-10-12 21:44:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741916649] [2024-10-12 21:44:57,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:57,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:44:57,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:44:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:57,137 INFO L87 Difference]: Start difference. First operand 41369 states and 62821 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 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)