./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.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 a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:04:51,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:04:51,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:04:51,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:04:51,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:04:51,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:04:51,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:04:51,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:04:51,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:04:51,415 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:04:51,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:04:51,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:04:51,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:04:51,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:04:51,417 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:04:51,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:04:51,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:04:51,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:04:51,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:04:51,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:04:51,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:04:51,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:04:51,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:04:51,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:04:51,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:04:51,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:04:51,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:04:51,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:04:51,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:04:51,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:04:51,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:04:51,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:04:51,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:04:51,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:04:51,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:04:51,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:04:51,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:04:51,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:04:51,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:04:51,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:04:51,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:04:51,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:04:51,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2024-11-22 04:04:51,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:04:51,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:04:51,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:04:51,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:04:51,709 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:04:51,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-22 04:04:53,319 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:04:53,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:04:53,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-22 04:04:53,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b236dc4b9/d27c865d5c9f414993ee728ed6e2ece8/FLAG79b72e902 [2024-11-22 04:04:53,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b236dc4b9/d27c865d5c9f414993ee728ed6e2ece8 [2024-11-22 04:04:53,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:04:53,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:04:53,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:04:53,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:04:53,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:04:53,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:04:53" (1/1) ... [2024-11-22 04:04:53,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e7510c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:53, skipping insertion in model container [2024-11-22 04:04:53,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:04:53" (1/1) ... [2024-11-22 04:04:53,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:04:53,800 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2024-11-22 04:04:53,873 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2024-11-22 04:04:53,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:04:53,917 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:04:53,926 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2024-11-22 04:04:53,951 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2024-11-22 04:04:53,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:04:54,016 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:04:54,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54 WrapperNode [2024-11-22 04:04:54,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:04:54,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:04:54,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:04:54,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:04:54,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,083 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 594 [2024-11-22 04:04:54,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:04:54,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:04:54,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:04:54,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:04:54,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,113 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 04:04:54,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:04:54,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:04:54,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:04:54,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:04:54,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (1/1) ... [2024-11-22 04:04:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:04:54,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:04:54,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 04:04:54,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 04:04:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:04:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:04:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:04:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-22 04:04:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-22 04:04:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:04:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:04:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:04:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:04:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-22 04:04:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-22 04:04:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:04:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:04:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:04:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:04:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-22 04:04:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-22 04:04:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-22 04:04:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-22 04:04:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-22 04:04:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-22 04:04:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:04:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:04:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:04:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:04:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:04:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-22 04:04:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-22 04:04:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:04:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:04:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:04:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:04:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:04:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:04:54,382 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:04:54,384 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:04:54,912 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-22 04:04:54,914 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:04:54,931 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:04:54,931 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-22 04:04:54,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:04:54 BoogieIcfgContainer [2024-11-22 04:04:54,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:04:54,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:04:54,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:04:54,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:04:54,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:04:53" (1/3) ... [2024-11-22 04:04:54,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4d333c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:04:54, skipping insertion in model container [2024-11-22 04:04:54,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:04:54" (2/3) ... [2024-11-22 04:04:54,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4d333c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:04:54, skipping insertion in model container [2024-11-22 04:04:54,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:04:54" (3/3) ... [2024-11-22 04:04:54,938 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-22 04:04:54,952 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:04:54,952 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:04:55,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:04:55,032 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;@123d2585, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:04:55,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:04:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 04:04:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:55,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:55,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:55,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:55,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash -644842896, now seen corresponding path program 1 times [2024-11-22 04:04:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425268470] [2024-11-22 04:04:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:55,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:55,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425268470] [2024-11-22 04:04:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425268470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:55,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:04:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131857558] [2024-11-22 04:04:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:55,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:04:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:04:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:55,615 INFO L87 Difference]: Start difference. First operand has 296 states, 244 states have (on average 1.5819672131147542) internal successors, (386), 252 states have internal predecessors, (386), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:56,492 INFO L93 Difference]: Finished difference Result 713 states and 1090 transitions. [2024-11-22 04:04:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:04:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:04:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:56,513 INFO L225 Difference]: With dead ends: 713 [2024-11-22 04:04:56,514 INFO L226 Difference]: Without dead ends: 427 [2024-11-22 04:04:56,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:04:56,522 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 606 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:56,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 1232 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:04:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-22 04:04:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 385. [2024-11-22 04:04:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 315 states have (on average 1.4730158730158731) internal successors, (464), 323 states have internal predecessors, (464), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2024-11-22 04:04:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 561 transitions. [2024-11-22 04:04:56,630 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 561 transitions. Word has length 65 [2024-11-22 04:04:56,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:56,634 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 561 transitions. [2024-11-22 04:04:56,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:56,635 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 561 transitions. [2024-11-22 04:04:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:56,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:56,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:56,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:04:56,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:56,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1621538290, now seen corresponding path program 1 times [2024-11-22 04:04:56,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387836032] [2024-11-22 04:04:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:56,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:56,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387836032] [2024-11-22 04:04:56,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387836032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:56,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:56,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:04:56,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204843105] [2024-11-22 04:04:56,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:56,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:04:56,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:04:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:56,834 INFO L87 Difference]: Start difference. First operand 385 states and 561 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:56,920 INFO L93 Difference]: Finished difference Result 576 states and 826 transitions. [2024-11-22 04:04:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:04:56,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-22 04:04:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:56,925 INFO L225 Difference]: With dead ends: 576 [2024-11-22 04:04:56,925 INFO L226 Difference]: Without dead ends: 395 [2024-11-22 04:04:56,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:56,927 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:56,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2060 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:04:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-22 04:04:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-22 04:04:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 323 states have (on average 1.4613003095975232) internal successors, (472), 331 states have internal predecessors, (472), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2024-11-22 04:04:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2024-11-22 04:04:56,961 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 65 [2024-11-22 04:04:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:56,962 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2024-11-22 04:04:56,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2024-11-22 04:04:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:56,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:56,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:56,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:04:56,965 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:56,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 592178992, now seen corresponding path program 1 times [2024-11-22 04:04:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516479401] [2024-11-22 04:04:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:56,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516479401] [2024-11-22 04:04:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516479401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:04:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258212282] [2024-11-22 04:04:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:57,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:04:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:04:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:57,146 INFO L87 Difference]: Start difference. First operand 395 states and 571 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:57,187 INFO L93 Difference]: Finished difference Result 596 states and 846 transitions. [2024-11-22 04:04:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:04:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-22 04:04:57,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:57,191 INFO L225 Difference]: With dead ends: 596 [2024-11-22 04:04:57,191 INFO L226 Difference]: Without dead ends: 405 [2024-11-22 04:04:57,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:57,193 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 0 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:57,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2060 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:04:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-11-22 04:04:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2024-11-22 04:04:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 331 states have (on average 1.4501510574018126) internal successors, (480), 339 states have internal predecessors, (480), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2024-11-22 04:04:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 581 transitions. [2024-11-22 04:04:57,220 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 581 transitions. Word has length 65 [2024-11-22 04:04:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:57,221 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 581 transitions. [2024-11-22 04:04:57,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 581 transitions. [2024-11-22 04:04:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:57,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:57,223 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:57,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:04:57,223 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:57,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1978382386, now seen corresponding path program 1 times [2024-11-22 04:04:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720887764] [2024-11-22 04:04:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:57,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720887764] [2024-11-22 04:04:57,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720887764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:57,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:57,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:04:57,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844291685] [2024-11-22 04:04:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:57,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:04:57,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:04:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:04:57,359 INFO L87 Difference]: Start difference. First operand 405 states and 581 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:57,999 INFO L93 Difference]: Finished difference Result 730 states and 1029 transitions. [2024-11-22 04:04:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 04:04:58,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:04:58,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:58,004 INFO L225 Difference]: With dead ends: 730 [2024-11-22 04:04:58,006 INFO L226 Difference]: Without dead ends: 528 [2024-11-22 04:04:58,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 04:04:58,009 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 322 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:58,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 914 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:04:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-22 04:04:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 497. [2024-11-22 04:04:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 404 states have (on average 1.4232673267326732) internal successors, (575), 413 states have internal predecessors, (575), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2024-11-22 04:04:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 700 transitions. [2024-11-22 04:04:58,048 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 700 transitions. Word has length 65 [2024-11-22 04:04:58,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:58,048 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 700 transitions. [2024-11-22 04:04:58,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 700 transitions. [2024-11-22 04:04:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:58,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:58,050 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:58,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:04:58,051 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:58,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2118930996, now seen corresponding path program 1 times [2024-11-22 04:04:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142373438] [2024-11-22 04:04:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142373438] [2024-11-22 04:04:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142373438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:58,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:04:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507822808] [2024-11-22 04:04:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:58,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:04:58,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:58,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:04:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:04:58,255 INFO L87 Difference]: Start difference. First operand 497 states and 700 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:58,978 INFO L93 Difference]: Finished difference Result 868 states and 1181 transitions. [2024-11-22 04:04:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 04:04:58,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:04:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:58,986 INFO L225 Difference]: With dead ends: 868 [2024-11-22 04:04:58,986 INFO L226 Difference]: Without dead ends: 583 [2024-11-22 04:04:58,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:04:58,988 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 600 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:58,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1002 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:04:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-22 04:04:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 509. [2024-11-22 04:04:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 414 states have (on average 1.4130434782608696) internal successors, (585), 423 states have internal predecessors, (585), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-22 04:04:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 710 transitions. [2024-11-22 04:04:59,027 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 710 transitions. Word has length 65 [2024-11-22 04:04:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:59,027 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 710 transitions. [2024-11-22 04:04:59,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 710 transitions. [2024-11-22 04:04:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:04:59,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:59,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:59,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:04:59,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:59,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1984917490, now seen corresponding path program 1 times [2024-11-22 04:04:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:59,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901953701] [2024-11-22 04:04:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901953701] [2024-11-22 04:04:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901953701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:04:59,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973692763] [2024-11-22 04:04:59,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:59,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:04:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:59,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:04:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:04:59,115 INFO L87 Difference]: Start difference. First operand 509 states and 710 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:59,497 INFO L93 Difference]: Finished difference Result 1099 states and 1486 transitions. [2024-11-22 04:04:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:04:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:04:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:59,507 INFO L225 Difference]: With dead ends: 1099 [2024-11-22 04:04:59,507 INFO L226 Difference]: Without dead ends: 803 [2024-11-22 04:04:59,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:04:59,511 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 559 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:59,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 497 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:04:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-22 04:04:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 799. [2024-11-22 04:04:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 638 states have (on average 1.3667711598746082) internal successors, (872), 654 states have internal predecessors, (872), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2024-11-22 04:04:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1089 transitions. [2024-11-22 04:04:59,577 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1089 transitions. Word has length 65 [2024-11-22 04:04:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:59,577 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1089 transitions. [2024-11-22 04:04:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:04:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1089 transitions. [2024-11-22 04:04:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:04:59,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:59,581 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:59,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 04:04:59,581 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:59,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2085986588, now seen corresponding path program 1 times [2024-11-22 04:04:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405044211] [2024-11-22 04:04:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:59,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:59,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:59,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405044211] [2024-11-22 04:04:59,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405044211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:59,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:59,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:04:59,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557933199] [2024-11-22 04:04:59,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:59,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:04:59,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:59,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:04:59,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:04:59,658 INFO L87 Difference]: Start difference. First operand 799 states and 1089 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:04:59,758 INFO L93 Difference]: Finished difference Result 1910 states and 2548 transitions. [2024-11-22 04:04:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:04:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-22 04:04:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:04:59,765 INFO L225 Difference]: With dead ends: 1910 [2024-11-22 04:04:59,765 INFO L226 Difference]: Without dead ends: 1303 [2024-11-22 04:04:59,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:04:59,773 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 103 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:04:59,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 793 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:04:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-11-22 04:04:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1280. [2024-11-22 04:04:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1017 states have (on average 1.3303834808259587) internal successors, (1353), 1036 states have internal predecessors, (1353), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2024-11-22 04:04:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1687 transitions. [2024-11-22 04:04:59,876 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1687 transitions. Word has length 66 [2024-11-22 04:04:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:04:59,876 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1687 transitions. [2024-11-22 04:04:59,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:04:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1687 transitions. [2024-11-22 04:04:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:04:59,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:04:59,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:04:59,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 04:04:59,881 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:04:59,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:04:59,882 INFO L85 PathProgramCache]: Analyzing trace with hash -750741049, now seen corresponding path program 1 times [2024-11-22 04:04:59,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:04:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894353999] [2024-11-22 04:04:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:04:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:04:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:04:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:04:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:04:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894353999] [2024-11-22 04:04:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894353999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:04:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:04:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:04:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616088435] [2024-11-22 04:04:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:04:59,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:04:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:04:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:04:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:04:59,927 INFO L87 Difference]: Start difference. First operand 1280 states and 1687 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:05:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:00,104 INFO L93 Difference]: Finished difference Result 3308 states and 4304 transitions. [2024-11-22 04:05:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:05:00,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-22 04:05:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:00,116 INFO L225 Difference]: With dead ends: 3308 [2024-11-22 04:05:00,117 INFO L226 Difference]: Without dead ends: 2240 [2024-11-22 04:05:00,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:05:00,120 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 385 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:00,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 522 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2024-11-22 04:05:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2142. [2024-11-22 04:05:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1683 states have (on average 1.2953060011883542) internal successors, (2180), 1712 states have internal predecessors, (2180), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2024-11-22 04:05:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2748 transitions. [2024-11-22 04:05:00,224 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2748 transitions. Word has length 66 [2024-11-22 04:05:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:00,225 INFO L471 AbstractCegarLoop]: Abstraction has 2142 states and 2748 transitions. [2024-11-22 04:05:00,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:05:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2748 transitions. [2024-11-22 04:05:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 04:05:00,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:00,227 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] [2024-11-22 04:05:00,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 04:05:00,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:00,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1699431707, now seen corresponding path program 1 times [2024-11-22 04:05:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467167554] [2024-11-22 04:05:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467167554] [2024-11-22 04:05:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467167554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:00,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:05:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567525971] [2024-11-22 04:05:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:00,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:05:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:05:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:05:00,258 INFO L87 Difference]: Start difference. First operand 2142 states and 2748 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:05:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:00,426 INFO L93 Difference]: Finished difference Result 4844 states and 6162 transitions. [2024-11-22 04:05:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:05:00,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-22 04:05:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:00,437 INFO L225 Difference]: With dead ends: 4844 [2024-11-22 04:05:00,437 INFO L226 Difference]: Without dead ends: 2914 [2024-11-22 04:05:00,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:05:00,441 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 385 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:00,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 537 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2024-11-22 04:05:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2874. [2024-11-22 04:05:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2251 states have (on average 1.281208351843625) internal successors, (2884), 2288 states have internal predecessors, (2884), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2024-11-22 04:05:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 3641 transitions. [2024-11-22 04:05:00,575 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 3641 transitions. Word has length 72 [2024-11-22 04:05:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:00,575 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 3641 transitions. [2024-11-22 04:05:00,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:05:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 3641 transitions. [2024-11-22 04:05:00,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 04:05:00,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:00,577 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:00,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:05:00,578 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:00,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash 626400016, now seen corresponding path program 1 times [2024-11-22 04:05:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915969202] [2024-11-22 04:05:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:00,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915969202] [2024-11-22 04:05:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915969202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:05:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642283468] [2024-11-22 04:05:00,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:00,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:05:00,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:00,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:05:00,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:00,632 INFO L87 Difference]: Start difference. First operand 2874 states and 3641 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:05:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:00,931 INFO L93 Difference]: Finished difference Result 3405 states and 4296 transitions. [2024-11-22 04:05:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-22 04:05:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:00,946 INFO L225 Difference]: With dead ends: 3405 [2024-11-22 04:05:00,947 INFO L226 Difference]: Without dead ends: 3402 [2024-11-22 04:05:00,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:00,949 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 767 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:00,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 516 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:05:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2024-11-22 04:05:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3368. [2024-11-22 04:05:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2636 states have (on average 1.2731411229135052) internal successors, (3356), 2678 states have internal predecessors, (3356), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2024-11-22 04:05:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4242 transitions. [2024-11-22 04:05:01,153 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4242 transitions. Word has length 73 [2024-11-22 04:05:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:01,154 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4242 transitions. [2024-11-22 04:05:01,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:05:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4242 transitions. [2024-11-22 04:05:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 04:05:01,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:01,156 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:01,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:05:01,157 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:01,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2057315323, now seen corresponding path program 1 times [2024-11-22 04:05:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:01,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68596732] [2024-11-22 04:05:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:01,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68596732] [2024-11-22 04:05:01,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68596732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:05:01,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252965229] [2024-11-22 04:05:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:01,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:05:01,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:05:01,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:05:01,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 04:05:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:01,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:05:01,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:05:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:01,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:05:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:01,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252965229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:05:01,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:05:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-22 04:05:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903307137] [2024-11-22 04:05:01,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:05:01,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:05:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:05:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:05:01,818 INFO L87 Difference]: Start difference. First operand 3368 states and 4242 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:05:02,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:02,490 INFO L93 Difference]: Finished difference Result 7249 states and 9096 transitions. [2024-11-22 04:05:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 04:05:02,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-22 04:05:02,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:02,515 INFO L225 Difference]: With dead ends: 7249 [2024-11-22 04:05:02,515 INFO L226 Difference]: Without dead ends: 7246 [2024-11-22 04:05:02,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:05:02,517 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 806 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:02,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1837 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:05:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2024-11-22 04:05:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 5158. [2024-11-22 04:05:02,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4040 states have (on average 1.2702970297029703) internal successors, (5132), 4104 states have internal predecessors, (5132), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2024-11-22 04:05:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6480 transitions. [2024-11-22 04:05:02,982 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6480 transitions. Word has length 74 [2024-11-22 04:05:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:02,983 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 6480 transitions. [2024-11-22 04:05:02,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:05:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6480 transitions. [2024-11-22 04:05:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 04:05:02,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:02,985 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:02,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 04:05:03,189 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,SelfDestructingSolverStorable10 [2024-11-22 04:05:03,191 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:03,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1368954160, now seen corresponding path program 2 times [2024-11-22 04:05:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:03,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046842096] [2024-11-22 04:05:03,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 04:05:03,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:03,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 04:05:03,209 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 04:05:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046842096] [2024-11-22 04:05:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046842096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:03,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:03,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:05:03,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467622239] [2024-11-22 04:05:03,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:03,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:05:03,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:05:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:05:03,234 INFO L87 Difference]: Start difference. First operand 5158 states and 6480 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:05:03,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:03,490 INFO L93 Difference]: Finished difference Result 7625 states and 9609 transitions. [2024-11-22 04:05:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:05:03,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-22 04:05:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:03,511 INFO L225 Difference]: With dead ends: 7625 [2024-11-22 04:05:03,512 INFO L226 Difference]: Without dead ends: 3550 [2024-11-22 04:05:03,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:05:03,522 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 384 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:03,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 617 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2024-11-22 04:05:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3530. [2024-11-22 04:05:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2768 states have (on average 1.254335260115607) internal successors, (3472), 2810 states have internal predecessors, (3472), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2024-11-22 04:05:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4378 transitions. [2024-11-22 04:05:03,892 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4378 transitions. Word has length 77 [2024-11-22 04:05:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:03,892 INFO L471 AbstractCegarLoop]: Abstraction has 3530 states and 4378 transitions. [2024-11-22 04:05:03,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:05:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4378 transitions. [2024-11-22 04:05:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 04:05:03,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:03,904 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:03,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:05:03,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:03,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash 255750743, now seen corresponding path program 1 times [2024-11-22 04:05:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233537234] [2024-11-22 04:05:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 04:05:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233537234] [2024-11-22 04:05:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233537234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179836767] [2024-11-22 04:05:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:04,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:04,032 INFO L87 Difference]: Start difference. First operand 3530 states and 4378 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:05:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:05,046 INFO L93 Difference]: Finished difference Result 10382 states and 12775 transitions. [2024-11-22 04:05:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 04:05:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-22 04:05:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:05,070 INFO L225 Difference]: With dead ends: 10382 [2024-11-22 04:05:05,070 INFO L226 Difference]: Without dead ends: 5759 [2024-11-22 04:05:05,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-22 04:05:05,079 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 611 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:05,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1284 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:05:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2024-11-22 04:05:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 5502. [2024-11-22 04:05:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 4288 states have (on average 1.2280783582089552) internal successors, (5266), 4366 states have internal predecessors, (5266), 590 states have call successors, (590), 490 states have call predecessors, (590), 622 states have return successors, (881), 652 states have call predecessors, (881), 587 states have call successors, (881) [2024-11-22 04:05:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 6737 transitions. [2024-11-22 04:05:05,624 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 6737 transitions. Word has length 84 [2024-11-22 04:05:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:05,624 INFO L471 AbstractCegarLoop]: Abstraction has 5502 states and 6737 transitions. [2024-11-22 04:05:05,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:05:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 6737 transitions. [2024-11-22 04:05:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 04:05:05,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:05,628 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:05,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:05:05,629 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:05,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash 430266766, now seen corresponding path program 1 times [2024-11-22 04:05:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:05,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228493744] [2024-11-22 04:05:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 04:05:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228493744] [2024-11-22 04:05:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228493744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:05,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:05,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 04:05:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994861609] [2024-11-22 04:05:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:05,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:05:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:05,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:05:05,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:05:05,720 INFO L87 Difference]: Start difference. First operand 5502 states and 6737 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:05:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:06,930 INFO L93 Difference]: Finished difference Result 9526 states and 11620 transitions. [2024-11-22 04:05:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 04:05:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-22 04:05:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:06,955 INFO L225 Difference]: With dead ends: 9526 [2024-11-22 04:05:06,955 INFO L226 Difference]: Without dead ends: 4882 [2024-11-22 04:05:06,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-22 04:05:06,969 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 1208 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:06,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1363 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:05:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2024-11-22 04:05:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4601. [2024-11-22 04:05:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 3593 states have (on average 1.2201502922349012) internal successors, (4384), 3654 states have internal predecessors, (4384), 494 states have call successors, (494), 405 states have call predecessors, (494), 512 states have return successors, (669), 548 states have call predecessors, (669), 491 states have call successors, (669) [2024-11-22 04:05:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5547 transitions. [2024-11-22 04:05:07,302 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5547 transitions. Word has length 93 [2024-11-22 04:05:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:07,302 INFO L471 AbstractCegarLoop]: Abstraction has 4601 states and 5547 transitions. [2024-11-22 04:05:07,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:05:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5547 transitions. [2024-11-22 04:05:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:07,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:07,306 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] [2024-11-22 04:05:07,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:05:07,306 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:07,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash 196053049, now seen corresponding path program 1 times [2024-11-22 04:05:07,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:07,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035376107] [2024-11-22 04:05:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:07,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035376107] [2024-11-22 04:05:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035376107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:07,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238400109] [2024-11-22 04:05:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:07,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:07,360 INFO L87 Difference]: Start difference. First operand 4601 states and 5547 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:07,933 INFO L93 Difference]: Finished difference Result 4971 states and 6111 transitions. [2024-11-22 04:05:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:05:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:07,994 INFO L225 Difference]: With dead ends: 4971 [2024-11-22 04:05:07,998 INFO L226 Difference]: Without dead ends: 4794 [2024-11-22 04:05:08,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:08,007 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 656 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:08,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 944 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:05:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2024-11-22 04:05:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4779. [2024-11-22 04:05:08,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 3751 states have (on average 1.2335377232737936) internal successors, (4627), 3813 states have internal predecessors, (4627), 507 states have call successors, (507), 411 states have call predecessors, (507), 519 states have return successors, (683), 561 states have call predecessors, (683), 504 states have call successors, (683) [2024-11-22 04:05:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 5817 transitions. [2024-11-22 04:05:08,506 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 5817 transitions. Word has length 91 [2024-11-22 04:05:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:08,506 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 5817 transitions. [2024-11-22 04:05:08,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 5817 transitions. [2024-11-22 04:05:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:08,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:08,509 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] [2024-11-22 04:05:08,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:05:08,509 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:08,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:08,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1858651595, now seen corresponding path program 1 times [2024-11-22 04:05:08,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:08,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201219555] [2024-11-22 04:05:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:08,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201219555] [2024-11-22 04:05:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201219555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:08,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095851556] [2024-11-22 04:05:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:08,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:08,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:08,597 INFO L87 Difference]: Start difference. First operand 4779 states and 5817 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:09,324 INFO L93 Difference]: Finished difference Result 5356 states and 6700 transitions. [2024-11-22 04:05:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:05:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:09,384 INFO L225 Difference]: With dead ends: 5356 [2024-11-22 04:05:09,384 INFO L226 Difference]: Without dead ends: 5001 [2024-11-22 04:05:09,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:05:09,392 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 663 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:09,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1298 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:05:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5001 states. [2024-11-22 04:05:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5001 to 4946. [2024-11-22 04:05:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3898 states have (on average 1.2437147255002565) internal successors, (4848), 3961 states have internal predecessors, (4848), 520 states have call successors, (520), 417 states have call predecessors, (520), 526 states have return successors, (699), 575 states have call predecessors, (699), 517 states have call successors, (699) [2024-11-22 04:05:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6067 transitions. [2024-11-22 04:05:09,980 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6067 transitions. Word has length 91 [2024-11-22 04:05:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:09,980 INFO L471 AbstractCegarLoop]: Abstraction has 4946 states and 6067 transitions. [2024-11-22 04:05:09,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6067 transitions. [2024-11-22 04:05:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:09,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:09,984 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] [2024-11-22 04:05:09,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:05:09,985 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:09,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -124547145, now seen corresponding path program 1 times [2024-11-22 04:05:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:09,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133535528] [2024-11-22 04:05:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:10,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133535528] [2024-11-22 04:05:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133535528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:10,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:10,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995244282] [2024-11-22 04:05:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:10,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:10,098 INFO L87 Difference]: Start difference. First operand 4946 states and 6067 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:11,262 INFO L93 Difference]: Finished difference Result 5879 states and 7493 transitions. [2024-11-22 04:05:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:05:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:11,282 INFO L225 Difference]: With dead ends: 5879 [2024-11-22 04:05:11,282 INFO L226 Difference]: Without dead ends: 5357 [2024-11-22 04:05:11,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:05:11,285 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 644 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:11,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1679 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:05:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2024-11-22 04:05:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 5297. [2024-11-22 04:05:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4207 states have (on average 1.263845971000713) internal successors, (5317), 4274 states have internal predecessors, (5317), 546 states have call successors, (546), 429 states have call predecessors, (546), 542 states have return successors, (737), 603 states have call predecessors, (737), 543 states have call successors, (737) [2024-11-22 04:05:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6600 transitions. [2024-11-22 04:05:11,733 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6600 transitions. Word has length 91 [2024-11-22 04:05:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:11,733 INFO L471 AbstractCegarLoop]: Abstraction has 5297 states and 6600 transitions. [2024-11-22 04:05:11,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6600 transitions. [2024-11-22 04:05:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:11,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:11,738 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] [2024-11-22 04:05:11,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:05:11,738 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:11,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash 762675701, now seen corresponding path program 1 times [2024-11-22 04:05:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124064859] [2024-11-22 04:05:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:11,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124064859] [2024-11-22 04:05:11,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124064859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:11,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:11,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:11,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233296472] [2024-11-22 04:05:11,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:11,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:11,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:11,826 INFO L87 Difference]: Start difference. First operand 5297 states and 6600 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:12,543 INFO L93 Difference]: Finished difference Result 6258 states and 8089 transitions. [2024-11-22 04:05:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:12,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:12,564 INFO L225 Difference]: With dead ends: 6258 [2024-11-22 04:05:12,564 INFO L226 Difference]: Without dead ends: 5385 [2024-11-22 04:05:12,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:12,568 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 523 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:12,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 712 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:05:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2024-11-22 04:05:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 5297. [2024-11-22 04:05:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4207 states have (on average 1.262657475635845) internal successors, (5312), 4274 states have internal predecessors, (5312), 546 states have call successors, (546), 429 states have call predecessors, (546), 542 states have return successors, (737), 603 states have call predecessors, (737), 543 states have call successors, (737) [2024-11-22 04:05:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 6595 transitions. [2024-11-22 04:05:12,938 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 6595 transitions. Word has length 91 [2024-11-22 04:05:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:12,938 INFO L471 AbstractCegarLoop]: Abstraction has 5297 states and 6595 transitions. [2024-11-22 04:05:12,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 6595 transitions. [2024-11-22 04:05:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:12,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:12,941 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] [2024-11-22 04:05:12,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:05:12,942 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:12,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:12,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1148366857, now seen corresponding path program 1 times [2024-11-22 04:05:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399893159] [2024-11-22 04:05:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399893159] [2024-11-22 04:05:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399893159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483111909] [2024-11-22 04:05:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:13,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:13,039 INFO L87 Difference]: Start difference. First operand 5297 states and 6595 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:13,997 INFO L93 Difference]: Finished difference Result 6972 states and 9161 transitions. [2024-11-22 04:05:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:05:13,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:14,021 INFO L225 Difference]: With dead ends: 6972 [2024-11-22 04:05:14,021 INFO L226 Difference]: Without dead ends: 6099 [2024-11-22 04:05:14,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:05:14,024 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 631 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:14,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1648 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:05:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2024-11-22 04:05:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6035. [2024-11-22 04:05:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.2972193614830072) internal successors, (6298), 4936 states have internal predecessors, (6298), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-22 04:05:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7733 transitions. [2024-11-22 04:05:14,446 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7733 transitions. Word has length 91 [2024-11-22 04:05:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:14,448 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7733 transitions. [2024-11-22 04:05:14,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7733 transitions. [2024-11-22 04:05:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:14,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:14,458 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] [2024-11-22 04:05:14,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:05:14,459 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:14,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1071466059, now seen corresponding path program 1 times [2024-11-22 04:05:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226035720] [2024-11-22 04:05:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226035720] [2024-11-22 04:05:14,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226035720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:14,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:14,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:14,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448934927] [2024-11-22 04:05:14,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:14,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:14,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:14,546 INFO L87 Difference]: Start difference. First operand 6035 states and 7733 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:15,604 INFO L93 Difference]: Finished difference Result 7791 states and 10471 transitions. [2024-11-22 04:05:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:15,632 INFO L225 Difference]: With dead ends: 7791 [2024-11-22 04:05:15,633 INFO L226 Difference]: Without dead ends: 6180 [2024-11-22 04:05:15,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:15,641 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 516 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:15,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 690 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:05:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2024-11-22 04:05:16,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 6035. [2024-11-22 04:05:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.2953656024716786) internal successors, (6289), 4936 states have internal predecessors, (6289), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-22 04:05:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7724 transitions. [2024-11-22 04:05:16,243 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7724 transitions. Word has length 91 [2024-11-22 04:05:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:16,243 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7724 transitions. [2024-11-22 04:05:16,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:16,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7724 transitions. [2024-11-22 04:05:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:16,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:16,250 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] [2024-11-22 04:05:16,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:05:16,250 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:16,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash 836991731, now seen corresponding path program 1 times [2024-11-22 04:05:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227550303] [2024-11-22 04:05:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227550303] [2024-11-22 04:05:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227550303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:16,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:16,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:16,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709107911] [2024-11-22 04:05:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:16,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:16,321 INFO L87 Difference]: Start difference. First operand 6035 states and 7724 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:17,165 INFO L93 Difference]: Finished difference Result 7762 states and 10395 transitions. [2024-11-22 04:05:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:17,193 INFO L225 Difference]: With dead ends: 7762 [2024-11-22 04:05:17,194 INFO L226 Difference]: Without dead ends: 6151 [2024-11-22 04:05:17,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:17,200 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 513 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:17,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 682 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:05:17,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2024-11-22 04:05:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6035. [2024-11-22 04:05:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6035 states, 4855 states have (on average 1.29351184346035) internal successors, (6280), 4936 states have internal predecessors, (6280), 598 states have call successors, (598), 453 states have call predecessors, (598), 580 states have return successors, (837), 659 states have call predecessors, (837), 595 states have call successors, (837) [2024-11-22 04:05:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6035 states to 6035 states and 7715 transitions. [2024-11-22 04:05:17,737 INFO L78 Accepts]: Start accepts. Automaton has 6035 states and 7715 transitions. Word has length 91 [2024-11-22 04:05:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:17,737 INFO L471 AbstractCegarLoop]: Abstraction has 6035 states and 7715 transitions. [2024-11-22 04:05:17,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6035 states and 7715 transitions. [2024-11-22 04:05:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:17,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:17,747 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] [2024-11-22 04:05:17,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:05:17,747 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:17,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 344365557, now seen corresponding path program 1 times [2024-11-22 04:05:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466831894] [2024-11-22 04:05:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:17,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466831894] [2024-11-22 04:05:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466831894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:17,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64288790] [2024-11-22 04:05:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:17,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:17,845 INFO L87 Difference]: Start difference. First operand 6035 states and 7715 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:19,009 INFO L93 Difference]: Finished difference Result 9284 states and 12716 transitions. [2024-11-22 04:05:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:05:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:19,035 INFO L225 Difference]: With dead ends: 9284 [2024-11-22 04:05:19,036 INFO L226 Difference]: Without dead ends: 7673 [2024-11-22 04:05:19,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:05:19,042 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 651 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:19,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1571 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:05:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2024-11-22 04:05:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 7505. [2024-11-22 04:05:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 6135 states have (on average 1.3362673186634066) internal successors, (8198), 6262 states have internal predecessors, (8198), 694 states have call successors, (694), 501 states have call predecessors, (694), 674 states have return successors, (1125), 763 states have call predecessors, (1125), 691 states have call successors, (1125) [2024-11-22 04:05:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 10017 transitions. [2024-11-22 04:05:19,598 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 10017 transitions. Word has length 91 [2024-11-22 04:05:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:19,598 INFO L471 AbstractCegarLoop]: Abstraction has 7505 states and 10017 transitions. [2024-11-22 04:05:19,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 10017 transitions. [2024-11-22 04:05:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:19,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:19,603 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] [2024-11-22 04:05:19,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 04:05:19,603 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1298305715, now seen corresponding path program 1 times [2024-11-22 04:05:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523878117] [2024-11-22 04:05:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523878117] [2024-11-22 04:05:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523878117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:19,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:19,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:05:19,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211830361] [2024-11-22 04:05:19,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:19,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:05:19,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:05:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:05:19,702 INFO L87 Difference]: Start difference. First operand 7505 states and 10017 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:21,115 INFO L93 Difference]: Finished difference Result 13764 states and 19992 transitions. [2024-11-22 04:05:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:05:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:21,198 INFO L225 Difference]: With dead ends: 13764 [2024-11-22 04:05:21,198 INFO L226 Difference]: Without dead ends: 10683 [2024-11-22 04:05:21,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:05:21,228 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 640 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:21,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1154 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:05:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2024-11-22 04:05:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 10502. [2024-11-22 04:05:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 8706 states have (on average 1.379508385021824) internal successors, (12010), 8979 states have internal predecessors, (12010), 878 states have call successors, (878), 597 states have call predecessors, (878), 916 states have return successors, (2077), 963 states have call predecessors, (2077), 875 states have call successors, (2077) [2024-11-22 04:05:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 14965 transitions. [2024-11-22 04:05:22,975 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 14965 transitions. Word has length 91 [2024-11-22 04:05:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:22,976 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 14965 transitions. [2024-11-22 04:05:22,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 14965 transitions. [2024-11-22 04:05:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:22,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:22,987 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] [2024-11-22 04:05:22,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 04:05:22,988 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:22,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:22,988 INFO L85 PathProgramCache]: Analyzing trace with hash 82151989, now seen corresponding path program 1 times [2024-11-22 04:05:22,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:22,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350256229] [2024-11-22 04:05:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350256229] [2024-11-22 04:05:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350256229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:23,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:23,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682811987] [2024-11-22 04:05:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:23,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:23,110 INFO L87 Difference]: Start difference. First operand 10502 states and 14965 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:24,079 INFO L93 Difference]: Finished difference Result 16678 states and 24979 transitions. [2024-11-22 04:05:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:05:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:24,115 INFO L225 Difference]: With dead ends: 16678 [2024-11-22 04:05:24,115 INFO L226 Difference]: Without dead ends: 10601 [2024-11-22 04:05:24,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:24,134 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:24,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10601 states. [2024-11-22 04:05:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10601 to 10601. [2024-11-22 04:05:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10601 states, 8805 states have (on average 1.3752413401476433) internal successors, (12109), 9078 states have internal predecessors, (12109), 878 states have call successors, (878), 597 states have call predecessors, (878), 916 states have return successors, (2077), 963 states have call predecessors, (2077), 875 states have call successors, (2077) [2024-11-22 04:05:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10601 states to 10601 states and 15064 transitions. [2024-11-22 04:05:25,142 INFO L78 Accepts]: Start accepts. Automaton has 10601 states and 15064 transitions. Word has length 91 [2024-11-22 04:05:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:25,143 INFO L471 AbstractCegarLoop]: Abstraction has 10601 states and 15064 transitions. [2024-11-22 04:05:25,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 10601 states and 15064 transitions. [2024-11-22 04:05:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:25,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:25,152 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] [2024-11-22 04:05:25,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 04:05:25,153 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:25,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 515881075, now seen corresponding path program 1 times [2024-11-22 04:05:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500801925] [2024-11-22 04:05:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500801925] [2024-11-22 04:05:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500801925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:05:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255456726] [2024-11-22 04:05:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:25,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:05:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:05:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:25,202 INFO L87 Difference]: Start difference. First operand 10601 states and 15064 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:26,420 INFO L93 Difference]: Finished difference Result 22787 states and 34528 transitions. [2024-11-22 04:05:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:26,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:26,468 INFO L225 Difference]: With dead ends: 22787 [2024-11-22 04:05:26,468 INFO L226 Difference]: Without dead ends: 16611 [2024-11-22 04:05:26,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:26,488 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 619 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:26,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:05:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16611 states. [2024-11-22 04:05:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16611 to 16541. [2024-11-22 04:05:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16541 states, 13970 states have (on average 1.4125984251968504) internal successors, (19734), 14455 states have internal predecessors, (19734), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-22 04:05:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16541 states to 16541 states and 24412 transitions. [2024-11-22 04:05:28,033 INFO L78 Accepts]: Start accepts. Automaton has 16541 states and 24412 transitions. Word has length 91 [2024-11-22 04:05:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:28,034 INFO L471 AbstractCegarLoop]: Abstraction has 16541 states and 24412 transitions. [2024-11-22 04:05:28,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 16541 states and 24412 transitions. [2024-11-22 04:05:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:28,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:28,040 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] [2024-11-22 04:05:28,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 04:05:28,040 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:28,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash 523631634, now seen corresponding path program 1 times [2024-11-22 04:05:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:28,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793740126] [2024-11-22 04:05:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:28,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:28,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:28,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793740126] [2024-11-22 04:05:28,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793740126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:28,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:28,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797691124] [2024-11-22 04:05:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:28,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:28,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:28,088 INFO L87 Difference]: Start difference. First operand 16541 states and 24412 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:29,255 INFO L93 Difference]: Finished difference Result 28756 states and 44040 transitions. [2024-11-22 04:05:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:05:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:29,311 INFO L225 Difference]: With dead ends: 28756 [2024-11-22 04:05:29,312 INFO L226 Difference]: Without dead ends: 16640 [2024-11-22 04:05:29,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:29,342 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:29,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16640 states. [2024-11-22 04:05:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16640 to 16640. [2024-11-22 04:05:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16640 states, 14069 states have (on average 1.4073494917904612) internal successors, (19800), 14554 states have internal predecessors, (19800), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-22 04:05:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16640 states to 16640 states and 24478 transitions. [2024-11-22 04:05:31,442 INFO L78 Accepts]: Start accepts. Automaton has 16640 states and 24478 transitions. Word has length 91 [2024-11-22 04:05:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:31,442 INFO L471 AbstractCegarLoop]: Abstraction has 16640 states and 24478 transitions. [2024-11-22 04:05:31,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 16640 states and 24478 transitions. [2024-11-22 04:05:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:31,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:31,449 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] [2024-11-22 04:05:31,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 04:05:31,449 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2061971664, now seen corresponding path program 1 times [2024-11-22 04:05:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506170708] [2024-11-22 04:05:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506170708] [2024-11-22 04:05:31,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506170708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:31,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352985253] [2024-11-22 04:05:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:31,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:31,489 INFO L87 Difference]: Start difference. First operand 16640 states and 24478 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:32,503 INFO L93 Difference]: Finished difference Result 29053 states and 44304 transitions. [2024-11-22 04:05:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:05:32,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:32,557 INFO L225 Difference]: With dead ends: 29053 [2024-11-22 04:05:32,558 INFO L226 Difference]: Without dead ends: 16838 [2024-11-22 04:05:32,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:32,587 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:32,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2024-11-22 04:05:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 16838. [2024-11-22 04:05:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16838 states, 14267 states have (on average 1.4016962220508866) internal successors, (19998), 14752 states have internal predecessors, (19998), 1243 states have call successors, (1243), 795 states have call predecessors, (1243), 1326 states have return successors, (3435), 1328 states have call predecessors, (3435), 1240 states have call successors, (3435) [2024-11-22 04:05:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16838 states to 16838 states and 24676 transitions. [2024-11-22 04:05:33,840 INFO L78 Accepts]: Start accepts. Automaton has 16838 states and 24676 transitions. Word has length 91 [2024-11-22 04:05:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:33,840 INFO L471 AbstractCegarLoop]: Abstraction has 16838 states and 24676 transitions. [2024-11-22 04:05:33,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16838 states and 24676 transitions. [2024-11-22 04:05:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:33,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:33,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:33,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 04:05:33,848 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:33,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash -304722930, now seen corresponding path program 1 times [2024-11-22 04:05:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:33,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833620769] [2024-11-22 04:05:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:33,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:33,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833620769] [2024-11-22 04:05:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833620769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:33,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:05:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572402075] [2024-11-22 04:05:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:33,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:05:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:05:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:33,886 INFO L87 Difference]: Start difference. First operand 16838 states and 24676 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:35,707 INFO L93 Difference]: Finished difference Result 41429 states and 63427 transitions. [2024-11-22 04:05:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:35,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:35,810 INFO L225 Difference]: With dead ends: 41429 [2024-11-22 04:05:35,810 INFO L226 Difference]: Without dead ends: 29016 [2024-11-22 04:05:35,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:35,842 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 631 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:35,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:05:35,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29016 states. [2024-11-22 04:05:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29016 to 28880. [2024-11-22 04:05:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28880 states, 24760 states have (on average 1.4235056542810987) internal successors, (35246), 25669 states have internal predecessors, (35246), 1972 states have call successors, (1972), 1191 states have call predecessors, (1972), 2146 states have return successors, (6150), 2057 states have call predecessors, (6150), 1969 states have call successors, (6150) [2024-11-22 04:05:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28880 states to 28880 states and 43368 transitions. [2024-11-22 04:05:38,593 INFO L78 Accepts]: Start accepts. Automaton has 28880 states and 43368 transitions. Word has length 91 [2024-11-22 04:05:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:38,594 INFO L471 AbstractCegarLoop]: Abstraction has 28880 states and 43368 transitions. [2024-11-22 04:05:38,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 28880 states and 43368 transitions. [2024-11-22 04:05:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:38,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:38,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:05:38,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 04:05:38,600 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:38,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:38,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1579825619, now seen corresponding path program 1 times [2024-11-22 04:05:38,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:38,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158859054] [2024-11-22 04:05:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158859054] [2024-11-22 04:05:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158859054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:38,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755434727] [2024-11-22 04:05:38,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:38,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:38,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:38,651 INFO L87 Difference]: Start difference. First operand 28880 states and 43368 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:40,422 INFO L93 Difference]: Finished difference Result 53533 states and 82417 transitions. [2024-11-22 04:05:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:05:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:40,560 INFO L225 Difference]: With dead ends: 53533 [2024-11-22 04:05:40,560 INFO L226 Difference]: Without dead ends: 29078 [2024-11-22 04:05:40,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:40,622 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:40,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29078 states. [2024-11-22 04:05:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29078 to 29078. [2024-11-22 04:05:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29078 states, 24958 states have (on average 1.417501402355958) internal successors, (35378), 25867 states have internal predecessors, (35378), 1972 states have call successors, (1972), 1191 states have call predecessors, (1972), 2146 states have return successors, (6150), 2057 states have call predecessors, (6150), 1969 states have call successors, (6150) [2024-11-22 04:05:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29078 states to 29078 states and 43500 transitions. [2024-11-22 04:05:42,788 INFO L78 Accepts]: Start accepts. Automaton has 29078 states and 43500 transitions. Word has length 91 [2024-11-22 04:05:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:42,789 INFO L471 AbstractCegarLoop]: Abstraction has 29078 states and 43500 transitions. [2024-11-22 04:05:42,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 29078 states and 43500 transitions. [2024-11-22 04:05:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:42,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:42,795 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] [2024-11-22 04:05:42,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 04:05:42,795 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:42,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1343334379, now seen corresponding path program 1 times [2024-11-22 04:05:42,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273124093] [2024-11-22 04:05:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:42,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:42,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273124093] [2024-11-22 04:05:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273124093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:05:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144709744] [2024-11-22 04:05:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:42,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:05:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:05:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:42,828 INFO L87 Difference]: Start difference. First operand 29078 states and 43500 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:46,616 INFO L93 Difference]: Finished difference Result 77723 states and 119544 transitions. [2024-11-22 04:05:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:05:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:46,828 INFO L225 Difference]: With dead ends: 77723 [2024-11-22 04:05:46,829 INFO L226 Difference]: Without dead ends: 53070 [2024-11-22 04:05:46,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:05:46,904 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 637 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:46,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1204 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:05:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53070 states. [2024-11-22 04:05:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53070 to 52802. [2024-11-22 04:05:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52802 states, 45682 states have (on average 1.429053018694453) internal successors, (65282), 47439 states have internal predecessors, (65282), 3332 states have call successors, (3332), 1983 states have call predecessors, (3332), 3786 states have return successors, (11482), 3417 states have call predecessors, (11482), 3329 states have call successors, (11482) [2024-11-22 04:05:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52802 states to 52802 states and 80096 transitions. [2024-11-22 04:05:51,208 INFO L78 Accepts]: Start accepts. Automaton has 52802 states and 80096 transitions. Word has length 91 [2024-11-22 04:05:51,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:05:51,209 INFO L471 AbstractCegarLoop]: Abstraction has 52802 states and 80096 transitions. [2024-11-22 04:05:51,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 52802 states and 80096 transitions. [2024-11-22 04:05:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-22 04:05:51,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:05:51,215 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] [2024-11-22 04:05:51,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 04:05:51,215 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:05:51,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:05:51,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1866655050, now seen corresponding path program 1 times [2024-11-22 04:05:51,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:05:51,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039066076] [2024-11-22 04:05:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:05:51,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:05:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:05:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:05:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:05:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039066076] [2024-11-22 04:05:51,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039066076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:05:51,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:05:51,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:05:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255751443] [2024-11-22 04:05:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:05:51,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:05:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:05:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:05:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:51,260 INFO L87 Difference]: Start difference. First operand 52802 states and 80096 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:05:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:05:56,285 INFO L93 Difference]: Finished difference Result 101575 states and 156705 transitions. [2024-11-22 04:05:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:05:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-22 04:05:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:05:56,494 INFO L225 Difference]: With dead ends: 101575 [2024-11-22 04:05:56,494 INFO L226 Difference]: Without dead ends: 53198 [2024-11-22 04:05:56,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:05:56,578 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 0 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:05:56,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1622 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:05:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53198 states.