./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 03:06:18,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 03:06:18,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 03:06:18,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 03:06:18,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 03:06:18,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 03:06:18,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 03:06:18,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 03:06:18,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 03:06:18,499 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 03:06:18,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 03:06:18,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 03:06:18,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 03:06:18,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 03:06:18,501 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 03:06:18,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 03:06:18,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 03:06:18,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 03:06:18,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 03:06:18,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 03:06:18,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 03:06:18,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 03:06:18,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 03:06:18,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 03:06:18,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 03:06:18,505 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 03:06:18,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 03:06:18,505 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 03:06:18,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 03:06:18,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 03:06:18,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 03:06:18,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 03:06:18,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:06:18,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 03:06:18,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 03:06:18,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 03:06:18,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 03:06:18,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 [2024-10-24 03:06:18,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 03:06:18,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 03:06:18,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 03:06:18,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 03:06:18,739 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 03:06:18,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2024-10-24 03:06:19,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 03:06:20,109 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 03:06:20,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2024-10-24 03:06:20,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6398138b1/bec93b0213ac4d5ab95b690342358722/FLAGfa166f1ea [2024-10-24 03:06:20,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6398138b1/bec93b0213ac4d5ab95b690342358722 [2024-10-24 03:06:20,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 03:06:20,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 03:06:20,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 03:06:20,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 03:06:20,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 03:06:20,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:20,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268cb32b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20, skipping insertion in model container [2024-10-24 03:06:20,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:20,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 03:06:20,692 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2024-10-24 03:06:20,747 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2024-10-24 03:06:20,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:06:20,836 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 03:06:20,845 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2024-10-24 03:06:20,863 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2024-10-24 03:06:20,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 03:06:20,935 INFO L204 MainTranslator]: Completed translation [2024-10-24 03:06:20,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20 WrapperNode [2024-10-24 03:06:20,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 03:06:20,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 03:06:20,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 03:06:20,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 03:06:20,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:20,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:20,987 INFO L138 Inliner]: procedures = 79, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1110 [2024-10-24 03:06:20,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 03:06:20,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 03:06:20,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 03:06:20,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 03:06:21,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,028 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 03:06:21,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 03:06:21,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 03:06:21,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 03:06:21,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 03:06:21,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (1/1) ... [2024-10-24 03:06:21,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 03:06:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:06:21,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 03:06:21,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 03:06:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 03:06:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 03:06:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 03:06:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-24 03:06:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-24 03:06:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 03:06:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 03:06:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 03:06:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 03:06:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-24 03:06:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-24 03:06:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 03:06:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 03:06:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 03:06:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 03:06:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-24 03:06:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-24 03:06:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-24 03:06:21,165 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-24 03:06:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-24 03:06:21,165 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-24 03:06:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 03:06:21,165 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 03:06:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 03:06:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 03:06:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 03:06:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-24 03:06:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-24 03:06:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 03:06:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 03:06:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 03:06:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 03:06:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-24 03:06:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-24 03:06:21,275 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 03:06:21,278 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 03:06:21,893 INFO L733 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-10-24 03:06:21,893 INFO L733 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-10-24 03:06:22,062 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-24 03:06:22,063 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 03:06:22,116 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 03:06:22,120 INFO L314 CfgBuilder]: Removed 19 assume(true) statements. [2024-10-24 03:06:22,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:22 BoogieIcfgContainer [2024-10-24 03:06:22,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 03:06:22,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 03:06:22,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 03:06:22,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 03:06:22,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:20" (1/3) ... [2024-10-24 03:06:22,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c7c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:22, skipping insertion in model container [2024-10-24 03:06:22,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:20" (2/3) ... [2024-10-24 03:06:22,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c7c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:22, skipping insertion in model container [2024-10-24 03:06:22,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:22" (3/3) ... [2024-10-24 03:06:22,127 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2024-10-24 03:06:22,139 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 03:06:22,139 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 03:06:22,212 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 03:06:22,219 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;@7659d01b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 03:06:22,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 03:06:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-24 03:06:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 03:06:22,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:22,233 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] [2024-10-24 03:06:22,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:22,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash -396566493, now seen corresponding path program 1 times [2024-10-24 03:06:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254584087] [2024-10-24 03:06:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:06:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:06:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:22,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254584087] [2024-10-24 03:06:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254584087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:06:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327613594] [2024-10-24 03:06:22,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:22,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:06:22,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:06:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:06:22,608 INFO L87 Difference]: Start difference. First operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:23,515 INFO L93 Difference]: Finished difference Result 908 states and 1519 transitions. [2024-10-24 03:06:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 03:06:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2024-10-24 03:06:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:23,530 INFO L225 Difference]: With dead ends: 908 [2024-10-24 03:06:23,530 INFO L226 Difference]: Without dead ends: 469 [2024-10-24 03:06:23,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:23,541 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1047 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:23,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1205 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:06:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-10-24 03:06:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 452. [2024-10-24 03:06:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 393 states have (on average 1.61323155216285) internal successors, (634), 398 states have internal predecessors, (634), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-24 03:06:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 718 transitions. [2024-10-24 03:06:23,603 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 718 transitions. Word has length 57 [2024-10-24 03:06:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:23,604 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 718 transitions. [2024-10-24 03:06:23,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 718 transitions. [2024-10-24 03:06:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 03:06:23,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:23,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:23,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 03:06:23,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:23,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -381047775, now seen corresponding path program 1 times [2024-10-24 03:06:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037136371] [2024-10-24 03:06:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:06:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:06:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037136371] [2024-10-24 03:06:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037136371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:06:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583857750] [2024-10-24 03:06:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:23,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:06:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:06:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:06:23,816 INFO L87 Difference]: Start difference. First operand 452 states and 718 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:24,884 INFO L93 Difference]: Finished difference Result 684 states and 1064 transitions. [2024-10-24 03:06:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:06:24,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2024-10-24 03:06:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:24,899 INFO L225 Difference]: With dead ends: 684 [2024-10-24 03:06:24,899 INFO L226 Difference]: Without dead ends: 590 [2024-10-24 03:06:24,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:06:24,901 INFO L432 NwaCegarLoop]: 368 mSDtfsCounter, 1556 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:24,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1553 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:06:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-10-24 03:06:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 553. [2024-10-24 03:06:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 472 states have (on average 1.5868644067796611) internal successors, (749), 479 states have internal predecessors, (749), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-10-24 03:06:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 864 transitions. [2024-10-24 03:06:24,948 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 864 transitions. Word has length 57 [2024-10-24 03:06:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:24,948 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 864 transitions. [2024-10-24 03:06:24,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 864 transitions. [2024-10-24 03:06:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 03:06:24,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:24,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:24,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 03:06:24,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:24,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1969926753, now seen corresponding path program 1 times [2024-10-24 03:06:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966422607] [2024-10-24 03:06:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:24,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:06:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:06:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966422607] [2024-10-24 03:06:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966422607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:06:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339856517] [2024-10-24 03:06:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:25,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:06:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:06:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:06:25,093 INFO L87 Difference]: Start difference. First operand 553 states and 864 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:26,321 INFO L93 Difference]: Finished difference Result 914 states and 1393 transitions. [2024-10-24 03:06:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 03:06:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2024-10-24 03:06:26,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:26,329 INFO L225 Difference]: With dead ends: 914 [2024-10-24 03:06:26,329 INFO L226 Difference]: Without dead ends: 726 [2024-10-24 03:06:26,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-24 03:06:26,331 INFO L432 NwaCegarLoop]: 409 mSDtfsCounter, 1387 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:26,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2142 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 03:06:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-10-24 03:06:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 654. [2024-10-24 03:06:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 551 states have (on average 1.5662431941923776) internal successors, (863), 560 states have internal predecessors, (863), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2024-10-24 03:06:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1012 transitions. [2024-10-24 03:06:26,359 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1012 transitions. Word has length 57 [2024-10-24 03:06:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:26,359 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1012 transitions. [2024-10-24 03:06:26,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1012 transitions. [2024-10-24 03:06:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 03:06:26,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:26,361 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] [2024-10-24 03:06:26,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 03:06:26,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:26,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1431554205, now seen corresponding path program 1 times [2024-10-24 03:06:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956175407] [2024-10-24 03:06:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:26,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 03:06:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 03:06:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956175407] [2024-10-24 03:06:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956175407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 03:06:26,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937503265] [2024-10-24 03:06:26,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:26,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:06:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:26,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:06:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:06:26,489 INFO L87 Difference]: Start difference. First operand 654 states and 1012 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-24 03:06:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:28,291 INFO L93 Difference]: Finished difference Result 2052 states and 3061 transitions. [2024-10-24 03:06:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 03:06:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2024-10-24 03:06:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:28,301 INFO L225 Difference]: With dead ends: 2052 [2024-10-24 03:06:28,302 INFO L226 Difference]: Without dead ends: 1751 [2024-10-24 03:06:28,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 03:06:28,306 INFO L432 NwaCegarLoop]: 417 mSDtfsCounter, 3655 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:28,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3673 Valid, 2391 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 03:06:28,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2024-10-24 03:06:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1618. [2024-10-24 03:06:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1310 states have (on average 1.465648854961832) internal successors, (1920), 1334 states have internal predecessors, (1920), 180 states have call successors, (180), 112 states have call predecessors, (180), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2024-10-24 03:06:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2312 transitions. [2024-10-24 03:06:28,399 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2312 transitions. Word has length 57 [2024-10-24 03:06:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:28,399 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2312 transitions. [2024-10-24 03:06:28,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-24 03:06:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2312 transitions. [2024-10-24 03:06:28,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:06:28,401 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:28,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:28,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 03:06:28,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:28,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1917518946, now seen corresponding path program 1 times [2024-10-24 03:06:28,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390295632] [2024-10-24 03:06:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 03:06:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:06:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390295632] [2024-10-24 03:06:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390295632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:28,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:28,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:06:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893424818] [2024-10-24 03:06:28,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:28,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:06:28,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:28,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:06:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:06:28,518 INFO L87 Difference]: Start difference. First operand 1618 states and 2312 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:06:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:29,634 INFO L93 Difference]: Finished difference Result 2999 states and 4236 transitions. [2024-10-24 03:06:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:06:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-24 03:06:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:29,641 INFO L225 Difference]: With dead ends: 2999 [2024-10-24 03:06:29,642 INFO L226 Difference]: Without dead ends: 1740 [2024-10-24 03:06:29,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-24 03:06:29,644 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 938 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:29,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2253 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:06:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2024-10-24 03:06:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1650. [2024-10-24 03:06:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1334 states have (on average 1.4527736131934033) internal successors, (1938), 1358 states have internal predecessors, (1938), 180 states have call successors, (180), 112 states have call predecessors, (180), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2024-10-24 03:06:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2338 transitions. [2024-10-24 03:06:29,718 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2338 transitions. Word has length 58 [2024-10-24 03:06:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:29,718 INFO L471 AbstractCegarLoop]: Abstraction has 1650 states and 2338 transitions. [2024-10-24 03:06:29,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:06:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2338 transitions. [2024-10-24 03:06:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 03:06:29,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:29,719 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:29,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 03:06:29,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:29,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:29,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1989905504, now seen corresponding path program 1 times [2024-10-24 03:06:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:29,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62976006] [2024-10-24 03:06:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:29,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 03:06:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 03:06:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62976006] [2024-10-24 03:06:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62976006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:29,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 03:06:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588889549] [2024-10-24 03:06:29,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:29,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 03:06:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 03:06:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 03:06:29,848 INFO L87 Difference]: Start difference. First operand 1650 states and 2338 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 03:06:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:31,602 INFO L93 Difference]: Finished difference Result 4909 states and 6899 transitions. [2024-10-24 03:06:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-24 03:06:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2024-10-24 03:06:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:31,610 INFO L225 Difference]: With dead ends: 4909 [2024-10-24 03:06:31,610 INFO L226 Difference]: Without dead ends: 2020 [2024-10-24 03:06:31,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 03:06:31,615 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 4200 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4218 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:31,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4218 Valid, 2092 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 03:06:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2024-10-24 03:06:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1864. [2024-10-24 03:06:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1476 states have (on average 1.4004065040650406) internal successors, (2067), 1502 states have internal predecessors, (2067), 220 states have call successors, (220), 140 states have call predecessors, (220), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2024-10-24 03:06:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2553 transitions. [2024-10-24 03:06:31,708 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2553 transitions. Word has length 58 [2024-10-24 03:06:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:31,711 INFO L471 AbstractCegarLoop]: Abstraction has 1864 states and 2553 transitions. [2024-10-24 03:06:31,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 03:06:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2553 transitions. [2024-10-24 03:06:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 03:06:31,712 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:31,713 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 03:06:31,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -638490220, now seen corresponding path program 1 times [2024-10-24 03:06:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721558632] [2024-10-24 03:06:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:06:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 03:06:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721558632] [2024-10-24 03:06:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721558632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:31,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:31,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:06:31,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627212683] [2024-10-24 03:06:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:31,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:06:31,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:06:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:06:31,852 INFO L87 Difference]: Start difference. First operand 1864 states and 2553 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:06:32,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:32,804 INFO L93 Difference]: Finished difference Result 3533 states and 4791 transitions. [2024-10-24 03:06:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 03:06:32,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2024-10-24 03:06:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:32,814 INFO L225 Difference]: With dead ends: 3533 [2024-10-24 03:06:32,814 INFO L226 Difference]: Without dead ends: 2028 [2024-10-24 03:06:32,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-24 03:06:32,817 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 929 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:32,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2223 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:06:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2024-10-24 03:06:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1912. [2024-10-24 03:06:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1512 states have (on average 1.3869047619047619) internal successors, (2097), 1538 states have internal predecessors, (2097), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2024-10-24 03:06:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2595 transitions. [2024-10-24 03:06:32,912 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2595 transitions. Word has length 80 [2024-10-24 03:06:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:32,913 INFO L471 AbstractCegarLoop]: Abstraction has 1912 states and 2595 transitions. [2024-10-24 03:06:32,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-24 03:06:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2595 transitions. [2024-10-24 03:06:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 03:06:32,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:32,914 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:32,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 03:06:32,914 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:32,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1289782482, now seen corresponding path program 1 times [2024-10-24 03:06:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950060135] [2024-10-24 03:06:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:06:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 03:06:33,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950060135] [2024-10-24 03:06:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950060135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:33,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 03:06:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862598518] [2024-10-24 03:06:33,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:33,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 03:06:33,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 03:06:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:06:33,079 INFO L87 Difference]: Start difference. First operand 1912 states and 2595 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:34,060 INFO L93 Difference]: Finished difference Result 3311 states and 4431 transitions. [2024-10-24 03:06:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 03:06:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2024-10-24 03:06:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:34,070 INFO L225 Difference]: With dead ends: 3311 [2024-10-24 03:06:34,070 INFO L226 Difference]: Without dead ends: 1979 [2024-10-24 03:06:34,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-10-24 03:06:34,073 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1735 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:34,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 1602 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 03:06:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2024-10-24 03:06:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1704. [2024-10-24 03:06:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.3942520265291083) internal successors, (1892), 1378 states have internal predecessors, (1892), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2024-10-24 03:06:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2322 transitions. [2024-10-24 03:06:34,152 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2322 transitions. Word has length 80 [2024-10-24 03:06:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:34,153 INFO L471 AbstractCegarLoop]: Abstraction has 1704 states and 2322 transitions. [2024-10-24 03:06:34,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 03:06:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2322 transitions. [2024-10-24 03:06:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-24 03:06:34,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:34,155 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:34,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 03:06:34,155 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:34,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1713429204, now seen corresponding path program 1 times [2024-10-24 03:06:34,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:34,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279911366] [2024-10-24 03:06:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:34,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 03:06:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 03:06:34,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:34,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279911366] [2024-10-24 03:06:34,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279911366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:34,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163593048] [2024-10-24 03:06:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:34,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:34,242 INFO L87 Difference]: Start difference. First operand 1704 states and 2322 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 03:06:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:34,820 INFO L93 Difference]: Finished difference Result 3153 states and 4251 transitions. [2024-10-24 03:06:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 03:06:34,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2024-10-24 03:06:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:34,828 INFO L225 Difference]: With dead ends: 3153 [2024-10-24 03:06:34,828 INFO L226 Difference]: Without dead ends: 1809 [2024-10-24 03:06:34,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-24 03:06:34,832 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 1569 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:34,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 1172 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 03:06:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2024-10-24 03:06:34,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1704. [2024-10-24 03:06:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.367722918201916) internal successors, (1856), 1378 states have internal predecessors, (1856), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2024-10-24 03:06:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2286 transitions. [2024-10-24 03:06:34,951 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2286 transitions. Word has length 80 [2024-10-24 03:06:34,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:34,952 INFO L471 AbstractCegarLoop]: Abstraction has 1704 states and 2286 transitions. [2024-10-24 03:06:34,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-24 03:06:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2286 transitions. [2024-10-24 03:06:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 03:06:34,953 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:34,953 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] [2024-10-24 03:06:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 03:06:34,954 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1809860207, now seen corresponding path program 1 times [2024-10-24 03:06:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232525540] [2024-10-24 03:06:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:06:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 03:06:35,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232525540] [2024-10-24 03:06:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232525540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:35,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:35,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 03:06:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976298341] [2024-10-24 03:06:35,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:35,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 03:06:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 03:06:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 03:06:35,083 INFO L87 Difference]: Start difference. First operand 1704 states and 2286 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:06:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:36,282 INFO L93 Difference]: Finished difference Result 3925 states and 5172 transitions. [2024-10-24 03:06:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 03:06:36,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2024-10-24 03:06:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:36,291 INFO L225 Difference]: With dead ends: 3925 [2024-10-24 03:06:36,291 INFO L226 Difference]: Without dead ends: 2440 [2024-10-24 03:06:36,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2024-10-24 03:06:36,294 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 1972 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:36,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 2270 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:06:36,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2024-10-24 03:06:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2276. [2024-10-24 03:06:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 1775 states have (on average 1.3233802816901408) internal successors, (2349), 1804 states have internal predecessors, (2349), 269 states have call successors, (269), 169 states have call predecessors, (269), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2024-10-24 03:06:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2987 transitions. [2024-10-24 03:06:36,434 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2987 transitions. Word has length 81 [2024-10-24 03:06:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:36,434 INFO L471 AbstractCegarLoop]: Abstraction has 2276 states and 2987 transitions. [2024-10-24 03:06:36,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-24 03:06:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2987 transitions. [2024-10-24 03:06:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 03:06:36,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:36,436 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:36,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 03:06:36,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:36,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1131838132, now seen corresponding path program 1 times [2024-10-24 03:06:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845933230] [2024-10-24 03:06:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:06:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:06:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 03:06:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 03:06:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-24 03:06:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 03:06:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-24 03:06:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-24 03:06:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 03:06:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845933230] [2024-10-24 03:06:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845933230] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:06:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174213688] [2024-10-24 03:06:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:36,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:06:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:06:36,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:06:36,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 03:06:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:36,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:06:36,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:06:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 03:06:36,809 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:06:36,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174213688] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:36,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:06:36,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-10-24 03:06:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910960809] [2024-10-24 03:06:36,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:36,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:06:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:06:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:36,811 INFO L87 Difference]: Start difference. First operand 2276 states and 2987 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-24 03:06:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:37,062 INFO L93 Difference]: Finished difference Result 5872 states and 7486 transitions. [2024-10-24 03:06:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:06:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-10-24 03:06:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:37,076 INFO L225 Difference]: With dead ends: 5872 [2024-10-24 03:06:37,076 INFO L226 Difference]: Without dead ends: 4026 [2024-10-24 03:06:37,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:37,080 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 57 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:37,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1327 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:06:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2024-10-24 03:06:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3986. [2024-10-24 03:06:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3072 states have (on average 1.2835286458333333) internal successors, (3943), 3124 states have internal predecessors, (3943), 476 states have call successors, (476), 330 states have call predecessors, (476), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2024-10-24 03:06:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5056 transitions. [2024-10-24 03:06:37,368 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5056 transitions. Word has length 145 [2024-10-24 03:06:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:37,368 INFO L471 AbstractCegarLoop]: Abstraction has 3986 states and 5056 transitions. [2024-10-24 03:06:37,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-10-24 03:06:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5056 transitions. [2024-10-24 03:06:37,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-24 03:06:37,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:37,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:37,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 03:06:37,571 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 [2024-10-24 03:06:37,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:37,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash 776960780, now seen corresponding path program 1 times [2024-10-24 03:06:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795186772] [2024-10-24 03:06:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:37,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:06:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:06:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 03:06:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 03:06:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 03:06:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 03:06:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 03:06:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 03:06:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 03:06:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 03:06:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-24 03:06:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795186772] [2024-10-24 03:06:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795186772] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:06:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677483880] [2024-10-24 03:06:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:37,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:06:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:06:37,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:06:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 03:06:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:37,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:06:37,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:06:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-24 03:06:38,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:06:38,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677483880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:38,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:06:38,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-10-24 03:06:38,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532026649] [2024-10-24 03:06:38,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:38,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:06:38,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:06:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:38,043 INFO L87 Difference]: Start difference. First operand 3986 states and 5056 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-24 03:06:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:38,491 INFO L93 Difference]: Finished difference Result 11238 states and 13996 transitions. [2024-10-24 03:06:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:06:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2024-10-24 03:06:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:38,512 INFO L225 Difference]: With dead ends: 11238 [2024-10-24 03:06:38,512 INFO L226 Difference]: Without dead ends: 7612 [2024-10-24 03:06:38,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:38,520 INFO L432 NwaCegarLoop]: 657 mSDtfsCounter, 48 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:38,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1296 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:06:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2024-10-24 03:06:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7604. [2024-10-24 03:06:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 5818 states have (on average 1.2567892746648333) internal successors, (7312), 5917 states have internal predecessors, (7312), 918 states have call successors, (918), 652 states have call predecessors, (918), 866 states have return successors, (1244), 1036 states have call predecessors, (1244), 914 states have call successors, (1244) [2024-10-24 03:06:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 9474 transitions. [2024-10-24 03:06:39,103 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 9474 transitions. Word has length 175 [2024-10-24 03:06:39,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:39,105 INFO L471 AbstractCegarLoop]: Abstraction has 7604 states and 9474 transitions. [2024-10-24 03:06:39,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-10-24 03:06:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 9474 transitions. [2024-10-24 03:06:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-24 03:06:39,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:39,110 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:39,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 03:06:39,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 03:06:39,311 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:39,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash 382593994, now seen corresponding path program 1 times [2024-10-24 03:06:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:39,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118866445] [2024-10-24 03:06:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-24 03:06:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 03:06:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 03:06:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 03:06:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 03:06:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:06:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 03:06:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 03:06:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-24 03:06:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 03:06:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 03:06:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-24 03:06:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 03:06:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 03:06:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 03:06:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 03:06:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-24 03:06:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118866445] [2024-10-24 03:06:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118866445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:06:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516189541] [2024-10-24 03:06:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:06:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:06:39,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:06:39,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 03:06:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:39,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:06:39,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:06:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-24 03:06:39,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:06:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516189541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:39,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:06:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-10-24 03:06:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438222368] [2024-10-24 03:06:39,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:39,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:06:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:06:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:39,732 INFO L87 Difference]: Start difference. First operand 7604 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-24 03:06:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:40,223 INFO L93 Difference]: Finished difference Result 13590 states and 17146 transitions. [2024-10-24 03:06:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:06:40,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2024-10-24 03:06:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:40,232 INFO L225 Difference]: With dead ends: 13590 [2024-10-24 03:06:40,232 INFO L226 Difference]: Without dead ends: 352 [2024-10-24 03:06:40,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:40,249 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 596 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:40,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 641 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:06:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-10-24 03:06:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-10-24 03:06:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.637223974763407) internal successors, (519), 319 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-24 03:06:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2024-10-24 03:06:40,261 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 175 [2024-10-24 03:06:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:40,262 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2024-10-24 03:06:40,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-10-24 03:06:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2024-10-24 03:06:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:40,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:40,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:40,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 03:06:40,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:06:40,468 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:40,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 971192510, now seen corresponding path program 1 times [2024-10-24 03:06:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910885867] [2024-10-24 03:06:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:40,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910885867] [2024-10-24 03:06:40,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910885867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:40,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:40,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:06:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054045603] [2024-10-24 03:06:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:40,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:06:40,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:06:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:06:40,620 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:41,797 INFO L93 Difference]: Finished difference Result 829 states and 1372 transitions. [2024-10-24 03:06:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:06:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:41,802 INFO L225 Difference]: With dead ends: 829 [2024-10-24 03:06:41,802 INFO L226 Difference]: Without dead ends: 482 [2024-10-24 03:06:41,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:06:41,803 INFO L432 NwaCegarLoop]: 304 mSDtfsCounter, 987 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:41,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 639 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 03:06:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-10-24 03:06:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2024-10-24 03:06:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6340694006309149) internal successors, (518), 319 states have internal predecessors, (518), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-24 03:06:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 572 transitions. [2024-10-24 03:06:41,834 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 572 transitions. Word has length 162 [2024-10-24 03:06:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:41,835 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 572 transitions. [2024-10-24 03:06:41,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 572 transitions. [2024-10-24 03:06:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:41,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:41,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:41,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 03:06:41,836 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:41,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash -9762304, now seen corresponding path program 1 times [2024-10-24 03:06:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:41,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037653055] [2024-10-24 03:06:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037653055] [2024-10-24 03:06:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037653055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 03:06:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143592186] [2024-10-24 03:06:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:41,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 03:06:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 03:06:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 03:06:41,993 INFO L87 Difference]: Start difference. First operand 352 states and 572 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:43,274 INFO L93 Difference]: Finished difference Result 821 states and 1355 transitions. [2024-10-24 03:06:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 03:06:43,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:43,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:43,280 INFO L225 Difference]: With dead ends: 821 [2024-10-24 03:06:43,280 INFO L226 Difference]: Without dead ends: 482 [2024-10-24 03:06:43,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 03:06:43,281 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 978 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:43,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 637 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 03:06:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-10-24 03:06:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2024-10-24 03:06:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6309148264984228) internal successors, (517), 319 states have internal predecessors, (517), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-24 03:06:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 571 transitions. [2024-10-24 03:06:43,310 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 571 transitions. Word has length 162 [2024-10-24 03:06:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:43,310 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 571 transitions. [2024-10-24 03:06:43,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 571 transitions. [2024-10-24 03:06:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:43,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:43,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:43,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 03:06:43,312 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:43,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:43,312 INFO L85 PathProgramCache]: Analyzing trace with hash 254885186, now seen corresponding path program 1 times [2024-10-24 03:06:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:43,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277780618] [2024-10-24 03:06:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:43,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277780618] [2024-10-24 03:06:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277780618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:43,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 03:06:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926780407] [2024-10-24 03:06:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:43,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 03:06:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 03:06:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 03:06:43,525 INFO L87 Difference]: Start difference. First operand 352 states and 571 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:45,412 INFO L93 Difference]: Finished difference Result 1297 states and 2153 transitions. [2024-10-24 03:06:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 03:06:45,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:45,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:45,417 INFO L225 Difference]: With dead ends: 1297 [2024-10-24 03:06:45,417 INFO L226 Difference]: Without dead ends: 964 [2024-10-24 03:06:45,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 03:06:45,418 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 1494 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:45,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1077 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 03:06:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-10-24 03:06:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2024-10-24 03:06:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 640 states have (on average 1.6421875) internal successors, (1051), 643 states have internal predecessors, (1051), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2024-10-24 03:06:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1150 transitions. [2024-10-24 03:06:45,449 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1150 transitions. Word has length 162 [2024-10-24 03:06:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:45,449 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1150 transitions. [2024-10-24 03:06:45,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1150 transitions. [2024-10-24 03:06:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:45,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:45,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:45,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 03:06:45,450 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:45,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:45,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1950483198, now seen corresponding path program 1 times [2024-10-24 03:06:45,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:45,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880646188] [2024-10-24 03:06:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:45,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880646188] [2024-10-24 03:06:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880646188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:45,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187989651] [2024-10-24 03:06:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:45,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:45,639 INFO L87 Difference]: Start difference. First operand 703 states and 1150 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:48,277 INFO L93 Difference]: Finished difference Result 2150 states and 3577 transitions. [2024-10-24 03:06:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:06:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:48,284 INFO L225 Difference]: With dead ends: 2150 [2024-10-24 03:06:48,284 INFO L226 Difference]: Without dead ends: 1466 [2024-10-24 03:06:48,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:06:48,286 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 1640 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:48,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1422 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:06:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2024-10-24 03:06:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1028. [2024-10-24 03:06:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 937 states have (on average 1.6360725720384204) internal successors, (1533), 941 states have internal predecessors, (1533), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2024-10-24 03:06:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1676 transitions. [2024-10-24 03:06:48,334 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1676 transitions. Word has length 162 [2024-10-24 03:06:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:48,334 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1676 transitions. [2024-10-24 03:06:48,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1676 transitions. [2024-10-24 03:06:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:48,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:48,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:48,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 03:06:48,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:48,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 556614276, now seen corresponding path program 1 times [2024-10-24 03:06:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830236603] [2024-10-24 03:06:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:48,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830236603] [2024-10-24 03:06:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830236603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:48,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:48,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818854816] [2024-10-24 03:06:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:48,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:48,585 INFO L87 Difference]: Start difference. First operand 1028 states and 1676 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:51,315 INFO L93 Difference]: Finished difference Result 3398 states and 5643 transitions. [2024-10-24 03:06:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:06:51,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:51,324 INFO L225 Difference]: With dead ends: 3398 [2024-10-24 03:06:51,324 INFO L226 Difference]: Without dead ends: 2389 [2024-10-24 03:06:51,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:06:51,327 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1535 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:51,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2051 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-24 03:06:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2024-10-24 03:06:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1681. [2024-10-24 03:06:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1534 states have (on average 1.6310299869621903) internal successors, (2502), 1540 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2024-10-24 03:06:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2737 transitions. [2024-10-24 03:06:51,459 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2737 transitions. Word has length 162 [2024-10-24 03:06:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:51,459 INFO L471 AbstractCegarLoop]: Abstraction has 1681 states and 2737 transitions. [2024-10-24 03:06:51,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2737 transitions. [2024-10-24 03:06:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:51,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:51,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:51,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 03:06:51,461 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:51,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:51,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1579268926, now seen corresponding path program 1 times [2024-10-24 03:06:51,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:51,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019002757] [2024-10-24 03:06:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019002757] [2024-10-24 03:06:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019002757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832388550] [2024-10-24 03:06:51,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:51,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:51,713 INFO L87 Difference]: Start difference. First operand 1681 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:54,540 INFO L93 Difference]: Finished difference Result 5797 states and 9596 transitions. [2024-10-24 03:06:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:06:54,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:54,553 INFO L225 Difference]: With dead ends: 5797 [2024-10-24 03:06:54,553 INFO L226 Difference]: Without dead ends: 4135 [2024-10-24 03:06:54,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:06:54,557 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1530 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:54,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2051 Invalid, 3768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:06:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2024-10-24 03:06:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 2990. [2024-10-24 03:06:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2731 states have (on average 1.6272427682167705) internal successors, (4444), 2741 states have internal predecessors, (4444), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2024-10-24 03:06:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4869 transitions. [2024-10-24 03:06:54,697 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4869 transitions. Word has length 162 [2024-10-24 03:06:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:54,697 INFO L471 AbstractCegarLoop]: Abstraction has 2990 states and 4869 transitions. [2024-10-24 03:06:54,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4869 transitions. [2024-10-24 03:06:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:54,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:54,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:54,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 03:06:54,700 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:54,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1509621052, now seen corresponding path program 1 times [2024-10-24 03:06:54,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:54,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183547866] [2024-10-24 03:06:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:54,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:54,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:54,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183547866] [2024-10-24 03:06:54,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183547866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:54,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:54,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:54,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125423219] [2024-10-24 03:06:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:54,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:54,898 INFO L87 Difference]: Start difference. First operand 2990 states and 4869 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:06:57,835 INFO L93 Difference]: Finished difference Result 10596 states and 17522 transitions. [2024-10-24 03:06:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:06:57,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:06:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:06:57,858 INFO L225 Difference]: With dead ends: 10596 [2024-10-24 03:06:57,858 INFO L226 Difference]: Without dead ends: 7625 [2024-10-24 03:06:57,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:06:57,867 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1529 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:06:57,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 2051 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:06:57,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2024-10-24 03:06:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 5615. [2024-10-24 03:06:58,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5132 states have (on average 1.6247077162899455) internal successors, (8338), 5150 states have internal predecessors, (8338), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2024-10-24 03:06:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 9161 transitions. [2024-10-24 03:06:58,173 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 9161 transitions. Word has length 162 [2024-10-24 03:06:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:06:58,173 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 9161 transitions. [2024-10-24 03:06:58,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:06:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 9161 transitions. [2024-10-24 03:06:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:06:58,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:06:58,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:06:58,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 03:06:58,177 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:06:58,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:06:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1091732350, now seen corresponding path program 1 times [2024-10-24 03:06:58,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:06:58,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596596047] [2024-10-24 03:06:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:06:58,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:06:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:06:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:06:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:06:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:06:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:06:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:06:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:06:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:06:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596596047] [2024-10-24 03:06:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596596047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:06:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:06:58,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:06:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059613535] [2024-10-24 03:06:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:06:58,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:06:58,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:06:58,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:06:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:06:58,367 INFO L87 Difference]: Start difference. First operand 5615 states and 9161 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:07:01,450 INFO L93 Difference]: Finished difference Result 20195 states and 33436 transitions. [2024-10-24 03:07:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:07:01,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:07:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:07:01,493 INFO L225 Difference]: With dead ends: 20195 [2024-10-24 03:07:01,493 INFO L226 Difference]: Without dead ends: 14599 [2024-10-24 03:07:01,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:07:01,511 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1528 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:07:01,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2051 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:07:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2024-10-24 03:07:02,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 10880. [2024-10-24 03:07:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10880 states, 9949 states have (on average 1.6230776962508795) internal successors, (16148), 9983 states have internal predecessors, (16148), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2024-10-24 03:07:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 17821 transitions. [2024-10-24 03:07:02,071 INFO L78 Accepts]: Start accepts. Automaton has 10880 states and 17821 transitions. Word has length 162 [2024-10-24 03:07:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:07:02,072 INFO L471 AbstractCegarLoop]: Abstraction has 10880 states and 17821 transitions. [2024-10-24 03:07:02,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10880 states and 17821 transitions. [2024-10-24 03:07:02,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:07:02,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:07:02,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:07:02,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 03:07:02,078 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:07:02,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:07:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash 307221252, now seen corresponding path program 1 times [2024-10-24 03:07:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:07:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376186757] [2024-10-24 03:07:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:07:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:07:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:07:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:07:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:07:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:07:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:07:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:07:02,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:07:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376186757] [2024-10-24 03:07:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376186757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:07:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:07:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:07:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804458448] [2024-10-24 03:07:02,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:07:02,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:07:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:07:02,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:07:02,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:07:02,251 INFO L87 Difference]: Start difference. First operand 10880 states and 17821 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:06,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:07:06,196 INFO L93 Difference]: Finished difference Result 39394 states and 65458 transitions. [2024-10-24 03:07:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:07:06,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:07:06,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:07:06,272 INFO L225 Difference]: With dead ends: 39394 [2024-10-24 03:07:06,273 INFO L226 Difference]: Without dead ends: 28533 [2024-10-24 03:07:06,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:07:06,302 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1527 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:07:06,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2051 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:07:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28533 states. [2024-10-24 03:07:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28533 to 21441. [2024-10-24 03:07:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21441 states, 19614 states have (on average 1.6220046905271746) internal successors, (31814), 19680 states have internal predecessors, (31814), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2024-10-24 03:07:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 35349 transitions. [2024-10-24 03:07:07,506 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 35349 transitions. Word has length 162 [2024-10-24 03:07:07,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:07:07,506 INFO L471 AbstractCegarLoop]: Abstraction has 21441 states and 35349 transitions. [2024-10-24 03:07:07,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 35349 transitions. [2024-10-24 03:07:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:07:07,518 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:07:07,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:07:07,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 03:07:07,519 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:07:07,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:07:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1310219198, now seen corresponding path program 1 times [2024-10-24 03:07:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:07:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414307883] [2024-10-24 03:07:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:07:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:07:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:07:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:07:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:07:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:07:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:07:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:07:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:07:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414307883] [2024-10-24 03:07:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414307883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:07:07,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:07:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:07:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703967438] [2024-10-24 03:07:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:07:07,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:07:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:07:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:07:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:07:07,687 INFO L87 Difference]: Start difference. First operand 21441 states and 35349 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:07:13,044 INFO L93 Difference]: Finished difference Result 77793 states and 130104 transitions. [2024-10-24 03:07:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:07:13,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:07:13,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:07:13,345 INFO L225 Difference]: With dead ends: 77793 [2024-10-24 03:07:13,345 INFO L226 Difference]: Without dead ends: 56371 [2024-10-24 03:07:13,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:07:13,394 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 1532 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:07:13,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 2051 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:07:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56371 states. [2024-10-24 03:07:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56371 to 42626. [2024-10-24 03:07:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42626 states, 39007 states have (on average 1.621247468403107) internal successors, (63240), 39137 states have internal predecessors, (63240), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2024-10-24 03:07:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42626 states to 42626 states and 70985 transitions. [2024-10-24 03:07:16,100 INFO L78 Accepts]: Start accepts. Automaton has 42626 states and 70985 transitions. Word has length 162 [2024-10-24 03:07:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:07:16,101 INFO L471 AbstractCegarLoop]: Abstraction has 42626 states and 70985 transitions. [2024-10-24 03:07:16,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand 42626 states and 70985 transitions. [2024-10-24 03:07:16,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:07:16,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:07:16,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:07:16,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 03:07:16,131 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:07:16,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:07:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -946752700, now seen corresponding path program 1 times [2024-10-24 03:07:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:07:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838882281] [2024-10-24 03:07:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:07:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:07:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:07:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:07:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:07:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:07:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:07:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:07:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:07:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838882281] [2024-10-24 03:07:16,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838882281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:07:16,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:07:16,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:07:16,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851651195] [2024-10-24 03:07:16,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:07:16,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:07:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:07:16,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:07:16,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:07:16,352 INFO L87 Difference]: Start difference. First operand 42626 states and 70985 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:07:24,998 INFO L93 Difference]: Finished difference Result 154462 states and 260986 transitions. [2024-10-24 03:07:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 03:07:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2024-10-24 03:07:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:07:25,392 INFO L225 Difference]: With dead ends: 154462 [2024-10-24 03:07:25,392 INFO L226 Difference]: Without dead ends: 111855 [2024-10-24 03:07:25,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 03:07:25,542 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 1618 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:07:25,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 1307 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 03:07:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111855 states. [2024-10-24 03:07:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111855 to 85252. [2024-10-24 03:07:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85252 states, 78049 states have (on average 1.6212891901241528) internal successors, (126540), 78307 states have internal predecessors, (126540), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2024-10-24 03:07:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85252 states to 85252 states and 144163 transitions. [2024-10-24 03:07:31,902 INFO L78 Accepts]: Start accepts. Automaton has 85252 states and 144163 transitions. Word has length 162 [2024-10-24 03:07:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:07:31,903 INFO L471 AbstractCegarLoop]: Abstraction has 85252 states and 144163 transitions. [2024-10-24 03:07:31,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 03:07:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 85252 states and 144163 transitions. [2024-10-24 03:07:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-24 03:07:31,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:07:31,943 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:07:31,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 03:07:31,944 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:07:31,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:07:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1491625274, now seen corresponding path program 1 times [2024-10-24 03:07:31,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:07:31,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187367] [2024-10-24 03:07:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:07:31,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:07:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:31,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:07:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:32,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 03:07:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:32,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 03:07:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:32,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-24 03:07:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:32,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 03:07:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:07:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 03:07:32,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:07:32,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187367] [2024-10-24 03:07:32,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187367] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:07:32,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 03:07:32,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 03:07:32,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586441185] [2024-10-24 03:07:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:07:32,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 03:07:32,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:07:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 03:07:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:07:32,108 INFO L87 Difference]: Start difference. First operand 85252 states and 144163 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)