./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:58:40,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:58:40,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:58:40,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:58:40,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:58:40,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:58:40,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:58:40,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:58:40,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:58:40,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:58:40,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:58:40,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:58:40,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:58:40,222 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:58:40,222 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:58:40,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:58:40,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:58:40,223 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:58:40,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:58:40,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:58:40,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:58:40,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:58:40,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:58:40,226 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:58:40,226 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:58:40,226 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:58:40,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:58:40,227 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:58:40,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:58:40,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:58:40,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:58:40,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:58:40,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:58:40,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:58:40,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:58:40,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:58:40,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:58:40,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:58:40,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:58:40,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:58:40,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:58:40,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:58:40,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 [2024-11-16 09:58:40,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:58:40,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:58:40,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:58:40,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:58:40,487 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:58:40,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2024-11-16 09:58:41,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:58:42,075 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:58:42,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2024-11-16 09:58:42,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73de88b9c/78dd0850615441989c971e6ea767933c/FLAG53c975124 [2024-11-16 09:58:42,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73de88b9c/78dd0850615441989c971e6ea767933c [2024-11-16 09:58:42,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:58:42,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:58:42,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:58:42,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:58:42,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:58:42,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:42,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbab427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42, skipping insertion in model container [2024-11-16 09:58:42,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:42,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:58:42,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2024-11-16 09:58:42,744 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2024-11-16 09:58:42,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:58:42,855 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:58:42,868 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2024-11-16 09:58:42,887 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2024-11-16 09:58:42,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:58:42,946 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:58:42,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42 WrapperNode [2024-11-16 09:58:42,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:58:42,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:58:42,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:58:42,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:58:42,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:42,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,013 INFO L138 Inliner]: procedures = 71, calls = 86, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 857 [2024-11-16 09:58:43,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:58:43,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:58:43,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:58:43,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:58:43,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:58:43,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,079 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:58:43,093 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:58:43,093 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:58:43,093 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:58:43,094 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (1/1) ... [2024-11-16 09:58:43,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:58:43,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:58:43,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:58:43,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:58:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:58:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:58:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:58:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-16 09:58:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-16 09:58:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-16 09:58:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-16 09:58:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-16 09:58:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-16 09:58:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-16 09:58:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-16 09:58:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-16 09:58:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-16 09:58:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-16 09:58:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-16 09:58:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-16 09:58:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-16 09:58:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-16 09:58:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-16 09:58:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-16 09:58:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-16 09:58:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-16 09:58:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-16 09:58:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:58:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-16 09:58:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-16 09:58:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-16 09:58:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-16 09:58:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:58:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:58:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-16 09:58:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-16 09:58:43,196 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-16 09:58:43,197 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-16 09:58:43,352 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:58:43,354 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:58:44,121 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L225: do_read_c_~a~0#1 := ~a_t~0; [2024-11-16 09:58:44,122 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L226: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-11-16 09:58:44,123 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L226: assume !(1 == ~q_free~0); [2024-11-16 09:58:44,287 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-16 09:58:44,287 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:58:44,323 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:58:44,323 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:58:44,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:58:44 BoogieIcfgContainer [2024-11-16 09:58:44,323 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:58:44,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:58:44,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:58:44,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:58:44,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:58:42" (1/3) ... [2024-11-16 09:58:44,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc82a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:58:44, skipping insertion in model container [2024-11-16 09:58:44,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:58:42" (2/3) ... [2024-11-16 09:58:44,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc82a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:58:44, skipping insertion in model container [2024-11-16 09:58:44,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:58:44" (3/3) ... [2024-11-16 09:58:44,335 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-2.c [2024-11-16 09:58:44,349 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:58:44,349 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:58:44,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:58:44,436 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;@470b9662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:58:44,437 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:58:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 477 states, 419 states have (on average 1.5202863961813842) internal successors, (637), 427 states have internal predecessors, (637), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-16 09:58:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:58:44,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:44,456 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] [2024-11-16 09:58:44,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:44,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1579847030, now seen corresponding path program 1 times [2024-11-16 09:58:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928998139] [2024-11-16 09:58:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:44,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:58:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:58:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:58:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:58:45,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:45,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928998139] [2024-11-16 09:58:45,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928998139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:45,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:45,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:58:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709383706] [2024-11-16 09:58:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:45,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:58:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:58:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:58:45,272 INFO L87 Difference]: Start difference. First operand has 477 states, 419 states have (on average 1.5202863961813842) internal successors, (637), 427 states have internal predecessors, (637), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-16 09:58:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:46,603 INFO L93 Difference]: Finished difference Result 1081 states and 1630 transitions. [2024-11-16 09:58:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:58:46,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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 69 [2024-11-16 09:58:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:46,622 INFO L225 Difference]: With dead ends: 1081 [2024-11-16 09:58:46,622 INFO L226 Difference]: Without dead ends: 615 [2024-11-16 09:58:46,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:58:46,637 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 1061 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:46,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1792 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:58:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-16 09:58:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 575. [2024-11-16 09:58:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 498 states have (on average 1.4437751004016064) internal successors, (719), 505 states have internal predecessors, (719), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2024-11-16 09:58:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 826 transitions. [2024-11-16 09:58:46,759 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 826 transitions. Word has length 69 [2024-11-16 09:58:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:46,760 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 826 transitions. [2024-11-16 09:58:46,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-16 09:58:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 826 transitions. [2024-11-16 09:58:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:58:46,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:46,766 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] [2024-11-16 09:58:46,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:58:46,767 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:46,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -866407958, now seen corresponding path program 1 times [2024-11-16 09:58:46,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097977957] [2024-11-16 09:58:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:58:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:58:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:58:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:58:47,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097977957] [2024-11-16 09:58:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097977957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:47,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:47,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:58:47,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837455602] [2024-11-16 09:58:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:47,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:58:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:58:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:58:47,123 INFO L87 Difference]: Start difference. First operand 575 states and 826 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-16 09:58:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:48,403 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2024-11-16 09:58:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 09:58:48,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 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 69 [2024-11-16 09:58:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:48,410 INFO L225 Difference]: With dead ends: 1010 [2024-11-16 09:58:48,410 INFO L226 Difference]: Without dead ends: 776 [2024-11-16 09:58:48,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-16 09:58:48,412 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 1511 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:48,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2142 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:58:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-16 09:58:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 699. [2024-11-16 09:58:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 600 states have (on average 1.4283333333333332) internal successors, (857), 609 states have internal predecessors, (857), 66 states have call successors, (66), 29 states have call predecessors, (66), 31 states have return successors, (75), 64 states have call predecessors, (75), 62 states have call successors, (75) [2024-11-16 09:58:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 998 transitions. [2024-11-16 09:58:48,469 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 998 transitions. Word has length 69 [2024-11-16 09:58:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:48,469 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 998 transitions. [2024-11-16 09:58:48,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 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) [2024-11-16 09:58:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 998 transitions. [2024-11-16 09:58:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:58:48,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:48,473 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] [2024-11-16 09:58:48,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:58:48,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:48,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash -173015253, now seen corresponding path program 1 times [2024-11-16 09:58:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304946032] [2024-11-16 09:58:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:58:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:58:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:58:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:58:48,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:48,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304946032] [2024-11-16 09:58:48,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304946032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:48,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:48,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 09:58:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622948704] [2024-11-16 09:58:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:48,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 09:58:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 09:58:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 09:58:48,660 INFO L87 Difference]: Start difference. First operand 699 states and 998 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 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) [2024-11-16 09:58:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:50,793 INFO L93 Difference]: Finished difference Result 2414 states and 3365 transitions. [2024-11-16 09:58:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:58:50,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 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 69 [2024-11-16 09:58:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:50,803 INFO L225 Difference]: With dead ends: 2414 [2024-11-16 09:58:50,804 INFO L226 Difference]: Without dead ends: 2044 [2024-11-16 09:58:50,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 09:58:50,807 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 3841 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3859 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:50,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3859 Valid, 2498 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:58:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2024-11-16 09:58:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1871. [2024-11-16 09:58:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1567 states have (on average 1.3529036375239312) internal successors, (2120), 1591 states have internal predecessors, (2120), 176 states have call successors, (176), 112 states have call predecessors, (176), 126 states have return successors, (208), 170 states have call predecessors, (208), 172 states have call successors, (208) [2024-11-16 09:58:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2504 transitions. [2024-11-16 09:58:50,936 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2504 transitions. Word has length 69 [2024-11-16 09:58:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:50,937 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 2504 transitions. [2024-11-16 09:58:50,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 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) [2024-11-16 09:58:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2504 transitions. [2024-11-16 09:58:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 09:58:50,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:50,939 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] [2024-11-16 09:58:50,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:58:50,940 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:50,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash -757226457, now seen corresponding path program 1 times [2024-11-16 09:58:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:50,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107602217] [2024-11-16 09:58:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:50,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:50,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 09:58:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-16 09:58:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:58:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:51,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107602217] [2024-11-16 09:58:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107602217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:51,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:51,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:58:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210861125] [2024-11-16 09:58:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:51,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:58:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:58:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:58:51,099 INFO L87 Difference]: Start difference. First operand 1871 states and 2504 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-16 09:58:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:52,286 INFO L93 Difference]: Finished difference Result 3539 states and 4715 transitions. [2024-11-16 09:58:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:58:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 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 70 [2024-11-16 09:58:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:52,298 INFO L225 Difference]: With dead ends: 3539 [2024-11-16 09:58:52,299 INFO L226 Difference]: Without dead ends: 2003 [2024-11-16 09:58:52,303 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 [2024-11-16 09:58:52,304 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 511 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:52,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2843 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:58:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2024-11-16 09:58:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1911. [2024-11-16 09:58:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1599 states have (on average 1.3420888055034397) internal successors, (2146), 1623 states have internal predecessors, (2146), 176 states have call successors, (176), 112 states have call predecessors, (176), 134 states have return successors, (216), 178 states have call predecessors, (216), 172 states have call successors, (216) [2024-11-16 09:58:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2538 transitions. [2024-11-16 09:58:52,422 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2538 transitions. Word has length 70 [2024-11-16 09:58:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:52,422 INFO L471 AbstractCegarLoop]: Abstraction has 1911 states and 2538 transitions. [2024-11-16 09:58:52,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-16 09:58:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2538 transitions. [2024-11-16 09:58:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 09:58:52,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:52,424 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] [2024-11-16 09:58:52,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:58:52,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:52,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash -633153210, now seen corresponding path program 1 times [2024-11-16 09:58:52,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:52,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550487276] [2024-11-16 09:58:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-16 09:58:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-16 09:58:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:58:52,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:52,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550487276] [2024-11-16 09:58:52,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550487276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:52,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:52,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 09:58:52,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19367388] [2024-11-16 09:58:52,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:52,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 09:58:52,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:52,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 09:58:52,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 09:58:52,606 INFO L87 Difference]: Start difference. First operand 1911 states and 2538 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-11-16 09:58:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:54,719 INFO L93 Difference]: Finished difference Result 5895 states and 7824 transitions. [2024-11-16 09:58:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:58:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 7 states have internal predecessors, (55), 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 70 [2024-11-16 09:58:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:54,730 INFO L225 Difference]: With dead ends: 5895 [2024-11-16 09:58:54,731 INFO L226 Difference]: Without dead ends: 2282 [2024-11-16 09:58:54,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 09:58:54,738 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 3567 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:54,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3585 Valid, 2981 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:58:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2024-11-16 09:58:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2097. [2024-11-16 09:58:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1713 states have (on average 1.3117338003502628) internal successors, (2247), 1739 states have internal predecessors, (2247), 216 states have call successors, (216), 140 states have call predecessors, (216), 166 states have return successors, (262), 220 states have call predecessors, (262), 212 states have call successors, (262) [2024-11-16 09:58:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2725 transitions. [2024-11-16 09:58:54,861 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2725 transitions. Word has length 70 [2024-11-16 09:58:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:54,861 INFO L471 AbstractCegarLoop]: Abstraction has 2097 states and 2725 transitions. [2024-11-16 09:58:54,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-11-16 09:58:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2725 transitions. [2024-11-16 09:58:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 09:58:54,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:54,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:58:54,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:58:54,866 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:54,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 144191291, now seen corresponding path program 1 times [2024-11-16 09:58:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:54,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312492823] [2024-11-16 09:58:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:54,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:54,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:54,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:54,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:54,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:55,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 09:58:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:55,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-16 09:58:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:55,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 09:58:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:58:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312492823] [2024-11-16 09:58:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312492823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:55,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:58:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034487176] [2024-11-16 09:58:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:55,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:58:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:58:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:58:55,032 INFO L87 Difference]: Start difference. First operand 2097 states and 2725 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-16 09:58:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:56,084 INFO L93 Difference]: Finished difference Result 4037 states and 5234 transitions. [2024-11-16 09:58:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 09:58:56,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 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 103 [2024-11-16 09:58:56,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:56,097 INFO L225 Difference]: With dead ends: 4037 [2024-11-16 09:58:56,098 INFO L226 Difference]: Without dead ends: 2275 [2024-11-16 09:58:56,103 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 [2024-11-16 09:58:56,108 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 508 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:56,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 2770 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:58:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2024-11-16 09:58:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2157. [2024-11-16 09:58:56,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1761 states have (on average 1.2998296422487223) internal successors, (2289), 1787 states have internal predecessors, (2289), 216 states have call successors, (216), 140 states have call predecessors, (216), 178 states have return successors, (274), 232 states have call predecessors, (274), 212 states have call successors, (274) [2024-11-16 09:58:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2779 transitions. [2024-11-16 09:58:56,323 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2779 transitions. Word has length 103 [2024-11-16 09:58:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:56,324 INFO L471 AbstractCegarLoop]: Abstraction has 2157 states and 2779 transitions. [2024-11-16 09:58:56,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-16 09:58:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2779 transitions. [2024-11-16 09:58:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 09:58:56,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:56,326 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:58:56,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:58:56,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:56,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1448585020, now seen corresponding path program 1 times [2024-11-16 09:58:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112341240] [2024-11-16 09:58:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 09:58:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-16 09:58:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 09:58:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:58:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:56,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112341240] [2024-11-16 09:58:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112341240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:56,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:56,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:58:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212806165] [2024-11-16 09:58:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:56,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:58:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:58:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:58:56,523 INFO L87 Difference]: Start difference. First operand 2157 states and 2779 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-16 09:58:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:57,546 INFO L93 Difference]: Finished difference Result 3782 states and 4841 transitions. [2024-11-16 09:58:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 09:58:57,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 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 103 [2024-11-16 09:58:57,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:57,559 INFO L225 Difference]: With dead ends: 3782 [2024-11-16 09:58:57,559 INFO L226 Difference]: Without dead ends: 2215 [2024-11-16 09:58:57,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-16 09:58:57,564 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 1506 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:57,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1804 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:58:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2024-11-16 09:58:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1919. [2024-11-16 09:58:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1576 states have (on average 1.3032994923857868) internal successors, (2054), 1597 states have internal predecessors, (2054), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2024-11-16 09:58:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2476 transitions. [2024-11-16 09:58:57,713 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2476 transitions. Word has length 103 [2024-11-16 09:58:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:57,713 INFO L471 AbstractCegarLoop]: Abstraction has 1919 states and 2476 transitions. [2024-11-16 09:58:57,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 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) [2024-11-16 09:58:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2476 transitions. [2024-11-16 09:58:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 09:58:57,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:57,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:58:57,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:58:57,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1549496987, now seen corresponding path program 1 times [2024-11-16 09:58:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105227636] [2024-11-16 09:58:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 09:58:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-16 09:58:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 09:58:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:58:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:57,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105227636] [2024-11-16 09:58:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105227636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:57,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:57,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:58:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147222027] [2024-11-16 09:58:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:57,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:58:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:58:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:58:57,830 INFO L87 Difference]: Start difference. First operand 1919 states and 2476 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-16 09:58:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:58,652 INFO L93 Difference]: Finished difference Result 5298 states and 6815 transitions. [2024-11-16 09:58:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 09:58:58,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 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 103 [2024-11-16 09:58:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:58,674 INFO L225 Difference]: With dead ends: 5298 [2024-11-16 09:58:58,674 INFO L226 Difference]: Without dead ends: 3715 [2024-11-16 09:58:58,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-16 09:58:58,679 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 1143 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:58,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1749 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:58:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2024-11-16 09:58:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3501. [2024-11-16 09:58:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 2838 states have (on average 1.266737138830162) internal successors, (3595), 2888 states have internal predecessors, (3595), 349 states have call successors, (349), 234 states have call predecessors, (349), 312 states have return successors, (517), 381 states have call predecessors, (517), 345 states have call successors, (517) [2024-11-16 09:58:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4461 transitions. [2024-11-16 09:58:59,020 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4461 transitions. Word has length 103 [2024-11-16 09:58:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:59,020 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 4461 transitions. [2024-11-16 09:58:59,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-16 09:58:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4461 transitions. [2024-11-16 09:58:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 09:58:59,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:59,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:58:59,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:58:59,025 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:59,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1107742492, now seen corresponding path program 1 times [2024-11-16 09:58:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374066745] [2024-11-16 09:58:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:58:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:58:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 09:58:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-16 09:58:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 09:58:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 09:58:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:58:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374066745] [2024-11-16 09:58:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374066745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:58:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:58:59,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:58:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623721561] [2024-11-16 09:58:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:58:59,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:58:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:58:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:58:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:58:59,112 INFO L87 Difference]: Start difference. First operand 3501 states and 4461 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 09:58:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:58:59,719 INFO L93 Difference]: Finished difference Result 5199 states and 6559 transitions. [2024-11-16 09:58:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:58:59,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 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 103 [2024-11-16 09:58:59,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:58:59,730 INFO L225 Difference]: With dead ends: 5199 [2024-11-16 09:58:59,730 INFO L226 Difference]: Without dead ends: 2034 [2024-11-16 09:58:59,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:58:59,737 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 638 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:58:59,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1599 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:58:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2024-11-16 09:58:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1919. [2024-11-16 09:58:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1576 states have (on average 1.2798223350253808) internal successors, (2017), 1597 states have internal predecessors, (2017), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2024-11-16 09:58:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2439 transitions. [2024-11-16 09:58:59,866 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2439 transitions. Word has length 103 [2024-11-16 09:58:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:58:59,867 INFO L471 AbstractCegarLoop]: Abstraction has 1919 states and 2439 transitions. [2024-11-16 09:58:59,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 09:58:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2439 transitions. [2024-11-16 09:58:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 09:58:59,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:58:59,869 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:58:59,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:58:59,870 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:58:59,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:58:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1522162088, now seen corresponding path program 1 times [2024-11-16 09:58:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:58:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110105439] [2024-11-16 09:58:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:58:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:58:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:58:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:58:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:58:59,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:58:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:59:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 09:59:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 09:59:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-16 09:59:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 09:59:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 09:59:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110105439] [2024-11-16 09:59:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110105439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:00,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:00,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:59:00,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268210798] [2024-11-16 09:59:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:00,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:59:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:59:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:59:00,023 INFO L87 Difference]: Start difference. First operand 1919 states and 2439 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-16 09:59:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:01,390 INFO L93 Difference]: Finished difference Result 4481 states and 5666 transitions. [2024-11-16 09:59:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 09:59:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 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 104 [2024-11-16 09:59:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:01,424 INFO L225 Difference]: With dead ends: 4481 [2024-11-16 09:59:01,425 INFO L226 Difference]: Without dead ends: 2738 [2024-11-16 09:59:01,428 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 [2024-11-16 09:59:01,429 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1886 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:01,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 2218 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:59:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2024-11-16 09:59:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2558. [2024-11-16 09:59:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2061 states have (on average 1.250363901018923) internal successors, (2577), 2090 states have internal predecessors, (2577), 265 states have call successors, (265), 169 states have call predecessors, (265), 230 states have return successors, (365), 300 states have call predecessors, (365), 261 states have call successors, (365) [2024-11-16 09:59:01,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3207 transitions. [2024-11-16 09:59:01,623 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3207 transitions. Word has length 104 [2024-11-16 09:59:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:01,624 INFO L471 AbstractCegarLoop]: Abstraction has 2558 states and 3207 transitions. [2024-11-16 09:59:01,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 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) [2024-11-16 09:59:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3207 transitions. [2024-11-16 09:59:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:01,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:01,628 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] [2024-11-16 09:59:01,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:59:01,628 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:01,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -369372997, now seen corresponding path program 1 times [2024-11-16 09:59:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:01,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250783136] [2024-11-16 09:59:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:01,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250783136] [2024-11-16 09:59:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250783136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:59:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819311060] [2024-11-16 09:59:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:01,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:59:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:59:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:59:01,821 INFO L87 Difference]: Start difference. First operand 2558 states and 3207 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-16 09:59:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:03,900 INFO L93 Difference]: Finished difference Result 3384 states and 4482 transitions. [2024-11-16 09:59:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:59:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:03,914 INFO L225 Difference]: With dead ends: 3384 [2024-11-16 09:59:03,914 INFO L226 Difference]: Without dead ends: 3074 [2024-11-16 09:59:03,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:59:03,916 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 1414 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:03,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1472 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:59:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2024-11-16 09:59:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2876. [2024-11-16 09:59:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2355 states have (on average 1.2823779193205944) internal successors, (3020), 2385 states have internal predecessors, (3020), 282 states have call successors, (282), 175 states have call predecessors, (282), 237 states have return successors, (385), 317 states have call predecessors, (385), 278 states have call successors, (385) [2024-11-16 09:59:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 3687 transitions. [2024-11-16 09:59:04,286 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 3687 transitions. Word has length 140 [2024-11-16 09:59:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:04,288 INFO L471 AbstractCegarLoop]: Abstraction has 2876 states and 3687 transitions. [2024-11-16 09:59:04,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 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) [2024-11-16 09:59:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 3687 transitions. [2024-11-16 09:59:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:04,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:04,291 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] [2024-11-16 09:59:04,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:59:04,291 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:04,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2022134204, now seen corresponding path program 1 times [2024-11-16 09:59:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017547912] [2024-11-16 09:59:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:04,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:04,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017547912] [2024-11-16 09:59:04,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017547912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:04,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:04,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:04,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253272516] [2024-11-16 09:59:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:04,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:04,515 INFO L87 Difference]: Start difference. First operand 2876 states and 3687 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:07,330 INFO L93 Difference]: Finished difference Result 4129 states and 5622 transitions. [2024-11-16 09:59:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:59:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:07,345 INFO L225 Difference]: With dead ends: 4129 [2024-11-16 09:59:07,346 INFO L226 Difference]: Without dead ends: 3501 [2024-11-16 09:59:07,348 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 [2024-11-16 09:59:07,349 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 1427 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:07,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 2686 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 09:59:07,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2024-11-16 09:59:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 3175. [2024-11-16 09:59:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 2630 states have (on average 1.3022813688212929) internal successors, (3425), 2661 states have internal predecessors, (3425), 299 states have call successors, (299), 181 states have call predecessors, (299), 244 states have return successors, (404), 335 states have call predecessors, (404), 295 states have call successors, (404) [2024-11-16 09:59:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4128 transitions. [2024-11-16 09:59:07,771 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4128 transitions. Word has length 140 [2024-11-16 09:59:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:07,771 INFO L471 AbstractCegarLoop]: Abstraction has 3175 states and 4128 transitions. [2024-11-16 09:59:07,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4128 transitions. [2024-11-16 09:59:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:07,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:07,774 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] [2024-11-16 09:59:07,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:59:07,774 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:07,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash -671667045, now seen corresponding path program 1 times [2024-11-16 09:59:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897722022] [2024-11-16 09:59:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:07,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:07,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:08,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:08,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:08,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:08,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897722022] [2024-11-16 09:59:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897722022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:08,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:08,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989755557] [2024-11-16 09:59:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:08,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:08,065 INFO L87 Difference]: Start difference. First operand 3175 states and 4128 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:10,801 INFO L93 Difference]: Finished difference Result 5229 states and 7293 transitions. [2024-11-16 09:59:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:59:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:10,824 INFO L225 Difference]: With dead ends: 5229 [2024-11-16 09:59:10,824 INFO L226 Difference]: Without dead ends: 4302 [2024-11-16 09:59:10,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:59:10,830 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 1425 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:10,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 2684 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:59:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2024-11-16 09:59:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 3774. [2024-11-16 09:59:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3181 states have (on average 1.3316567117258724) internal successors, (4236), 3214 states have internal predecessors, (4236), 333 states have call successors, (333), 193 states have call predecessors, (333), 258 states have return successors, (446), 371 states have call predecessors, (446), 329 states have call successors, (446) [2024-11-16 09:59:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5015 transitions. [2024-11-16 09:59:11,194 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5015 transitions. Word has length 140 [2024-11-16 09:59:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:11,194 INFO L471 AbstractCegarLoop]: Abstraction has 3774 states and 5015 transitions. [2024-11-16 09:59:11,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5015 transitions. [2024-11-16 09:59:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:11,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:11,197 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] [2024-11-16 09:59:11,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:59:11,198 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:11,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1312753188, now seen corresponding path program 1 times [2024-11-16 09:59:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476951450] [2024-11-16 09:59:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476951450] [2024-11-16 09:59:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476951450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:11,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:11,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848376309] [2024-11-16 09:59:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:11,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:11,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:11,405 INFO L87 Difference]: Start difference. First operand 3774 states and 5015 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:14,074 INFO L93 Difference]: Finished difference Result 7356 states and 10504 transitions. [2024-11-16 09:59:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:59:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:14,097 INFO L225 Difference]: With dead ends: 7356 [2024-11-16 09:59:14,097 INFO L226 Difference]: Without dead ends: 5830 [2024-11-16 09:59:14,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:59:14,105 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 1421 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:14,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 2684 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:59:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2024-11-16 09:59:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 4973. [2024-11-16 09:59:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 4284 states have (on average 1.3674136321195145) internal successors, (5858), 4321 states have internal predecessors, (5858), 401 states have call successors, (401), 217 states have call predecessors, (401), 286 states have return successors, (536), 443 states have call predecessors, (536), 397 states have call successors, (536) [2024-11-16 09:59:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 6795 transitions. [2024-11-16 09:59:14,740 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 6795 transitions. Word has length 140 [2024-11-16 09:59:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:14,741 INFO L471 AbstractCegarLoop]: Abstraction has 4973 states and 6795 transitions. [2024-11-16 09:59:14,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 6795 transitions. [2024-11-16 09:59:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:14,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:14,745 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] [2024-11-16 09:59:14,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:59:14,746 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:14,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -86507397, now seen corresponding path program 1 times [2024-11-16 09:59:14,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:14,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175245390] [2024-11-16 09:59:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175245390] [2024-11-16 09:59:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175245390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44896280] [2024-11-16 09:59:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:14,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:14,958 INFO L87 Difference]: Start difference. First operand 4973 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:17,631 INFO L93 Difference]: Finished difference Result 11609 states and 16942 transitions. [2024-11-16 09:59:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:59:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:17,661 INFO L225 Difference]: With dead ends: 11609 [2024-11-16 09:59:17,661 INFO L226 Difference]: Without dead ends: 8884 [2024-11-16 09:59:17,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:59:17,673 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 1417 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:17,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 2684 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:59:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8884 states. [2024-11-16 09:59:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8884 to 7376. [2024-11-16 09:59:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6495 states have (on average 1.402309468822171) internal successors, (9108), 6540 states have internal predecessors, (9108), 537 states have call successors, (537), 265 states have call predecessors, (537), 342 states have return successors, (734), 587 states have call predecessors, (734), 533 states have call successors, (734) [2024-11-16 09:59:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 10379 transitions. [2024-11-16 09:59:18,368 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 10379 transitions. Word has length 140 [2024-11-16 09:59:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:18,368 INFO L471 AbstractCegarLoop]: Abstraction has 7376 states and 10379 transitions. [2024-11-16 09:59:18,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 10379 transitions. [2024-11-16 09:59:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:18,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:18,375 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] [2024-11-16 09:59:18,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:59:18,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:18,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1199974908, now seen corresponding path program 1 times [2024-11-16 09:59:18,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:18,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120083148] [2024-11-16 09:59:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120083148] [2024-11-16 09:59:18,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120083148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:18,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:18,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:18,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162643557] [2024-11-16 09:59:18,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:18,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:18,575 INFO L87 Difference]: Start difference. First operand 7376 states and 10379 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:20,627 INFO L93 Difference]: Finished difference Result 14075 states and 20722 transitions. [2024-11-16 09:59:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:59:20,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:20,661 INFO L225 Difference]: With dead ends: 14075 [2024-11-16 09:59:20,661 INFO L226 Difference]: Without dead ends: 8947 [2024-11-16 09:59:20,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:59:20,679 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1294 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:20,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 1246 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:59:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8947 states. [2024-11-16 09:59:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8947 to 7376. [2024-11-16 09:59:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6495 states have (on average 1.3996920708237106) internal successors, (9091), 6540 states have internal predecessors, (9091), 537 states have call successors, (537), 265 states have call predecessors, (537), 342 states have return successors, (734), 587 states have call predecessors, (734), 533 states have call successors, (734) [2024-11-16 09:59:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 10362 transitions. [2024-11-16 09:59:21,240 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 10362 transitions. Word has length 140 [2024-11-16 09:59:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:21,241 INFO L471 AbstractCegarLoop]: Abstraction has 7376 states and 10362 transitions. [2024-11-16 09:59:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 10362 transitions. [2024-11-16 09:59:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:21,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:21,249 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] [2024-11-16 09:59:21,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:59:21,250 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:21,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1113830309, now seen corresponding path program 1 times [2024-11-16 09:59:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919563128] [2024-11-16 09:59:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919563128] [2024-11-16 09:59:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919563128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:21,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:21,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904323346] [2024-11-16 09:59:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:21,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:21,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:21,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:21,433 INFO L87 Difference]: Start difference. First operand 7376 states and 10362 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:23,456 INFO L93 Difference]: Finished difference Result 14057 states and 20636 transitions. [2024-11-16 09:59:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:59:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:23,482 INFO L225 Difference]: With dead ends: 14057 [2024-11-16 09:59:23,483 INFO L226 Difference]: Without dead ends: 8929 [2024-11-16 09:59:23,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:59:23,496 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1116 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:23,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1508 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 09:59:23,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2024-11-16 09:59:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 7376. [2024-11-16 09:59:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6495 states have (on average 1.39707467282525) internal successors, (9074), 6540 states have internal predecessors, (9074), 537 states have call successors, (537), 265 states have call predecessors, (537), 342 states have return successors, (734), 587 states have call predecessors, (734), 533 states have call successors, (734) [2024-11-16 09:59:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 10345 transitions. [2024-11-16 09:59:24,266 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 10345 transitions. Word has length 140 [2024-11-16 09:59:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:24,266 INFO L471 AbstractCegarLoop]: Abstraction has 7376 states and 10345 transitions. [2024-11-16 09:59:24,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 10345 transitions. [2024-11-16 09:59:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:24,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:24,273 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] [2024-11-16 09:59:24,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:59:24,274 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:24,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1998119452, now seen corresponding path program 1 times [2024-11-16 09:59:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217901567] [2024-11-16 09:59:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:24,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:24,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:24,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217901567] [2024-11-16 09:59:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217901567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:24,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:24,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:24,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591615843] [2024-11-16 09:59:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:24,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:24,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:24,496 INFO L87 Difference]: Start difference. First operand 7376 states and 10345 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:26,739 INFO L93 Difference]: Finished difference Result 14038 states and 20548 transitions. [2024-11-16 09:59:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:59:26,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:26,767 INFO L225 Difference]: With dead ends: 14038 [2024-11-16 09:59:26,767 INFO L226 Difference]: Without dead ends: 8910 [2024-11-16 09:59:26,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:59:26,779 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1114 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:26,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1508 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:59:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8910 states. [2024-11-16 09:59:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8910 to 7376. [2024-11-16 09:59:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6495 states have (on average 1.3944572748267898) internal successors, (9057), 6540 states have internal predecessors, (9057), 537 states have call successors, (537), 265 states have call predecessors, (537), 342 states have return successors, (734), 587 states have call predecessors, (734), 533 states have call successors, (734) [2024-11-16 09:59:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 10328 transitions. [2024-11-16 09:59:27,411 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 10328 transitions. Word has length 140 [2024-11-16 09:59:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:27,412 INFO L471 AbstractCegarLoop]: Abstraction has 7376 states and 10328 transitions. [2024-11-16 09:59:27,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 10328 transitions. [2024-11-16 09:59:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:27,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:27,418 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] [2024-11-16 09:59:27,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:59:27,418 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:27,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:27,418 INFO L85 PathProgramCache]: Analyzing trace with hash 851578939, now seen corresponding path program 1 times [2024-11-16 09:59:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308242102] [2024-11-16 09:59:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:27,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308242102] [2024-11-16 09:59:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308242102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:27,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:27,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:27,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428623506] [2024-11-16 09:59:27,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:27,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:27,607 INFO L87 Difference]: Start difference. First operand 7376 states and 10328 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:30,448 INFO L93 Difference]: Finished difference Result 20055 states and 29512 transitions. [2024-11-16 09:59:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:59:30,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:30,494 INFO L225 Difference]: With dead ends: 20055 [2024-11-16 09:59:30,494 INFO L226 Difference]: Without dead ends: 14927 [2024-11-16 09:59:30,506 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 [2024-11-16 09:59:30,507 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 1477 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:30,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1816 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 09:59:30,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14927 states. [2024-11-16 09:59:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14927 to 12243. [2024-11-16 09:59:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12243 states, 10978 states have (on average 1.4190198578976134) internal successors, (15578), 11039 states have internal predecessors, (15578), 809 states have call successors, (809), 361 states have call predecessors, (809), 454 states have return successors, (1184), 875 states have call predecessors, (1184), 805 states have call successors, (1184) [2024-11-16 09:59:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12243 states to 12243 states and 17571 transitions. [2024-11-16 09:59:31,561 INFO L78 Accepts]: Start accepts. Automaton has 12243 states and 17571 transitions. Word has length 140 [2024-11-16 09:59:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:31,562 INFO L471 AbstractCegarLoop]: Abstraction has 12243 states and 17571 transitions. [2024-11-16 09:59:31,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12243 states and 17571 transitions. [2024-11-16 09:59:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:31,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:31,573 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] [2024-11-16 09:59:31,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:59:31,574 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:31,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -432332228, now seen corresponding path program 1 times [2024-11-16 09:59:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581718661] [2024-11-16 09:59:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:31,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:31,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581718661] [2024-11-16 09:59:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581718661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:31,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023570219] [2024-11-16 09:59:31,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:31,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:31,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:31,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:31,800 INFO L87 Difference]: Start difference. First operand 12243 states and 17571 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:35,562 INFO L93 Difference]: Finished difference Result 40932 states and 61173 transitions. [2024-11-16 09:59:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:59:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:35,655 INFO L225 Difference]: With dead ends: 40932 [2024-11-16 09:59:35,656 INFO L226 Difference]: Without dead ends: 30937 [2024-11-16 09:59:35,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:59:35,683 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 1715 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:35,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 2674 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:59:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30937 states. [2024-11-16 09:59:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30937 to 21905. [2024-11-16 09:59:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21905 states, 19904 states have (on average 1.4362942122186495) internal successors, (28588), 19997 states have internal predecessors, (28588), 1321 states have call successors, (1321), 553 states have call predecessors, (1321), 678 states have return successors, (2214), 1419 states have call predecessors, (2214), 1317 states have call successors, (2214) [2024-11-16 09:59:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21905 states to 21905 states and 32123 transitions. [2024-11-16 09:59:37,184 INFO L78 Accepts]: Start accepts. Automaton has 21905 states and 32123 transitions. Word has length 140 [2024-11-16 09:59:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:37,184 INFO L471 AbstractCegarLoop]: Abstraction has 21905 states and 32123 transitions. [2024-11-16 09:59:37,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:37,184 INFO L276 IsEmpty]: Start isEmpty. Operand 21905 states and 32123 transitions. [2024-11-16 09:59:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:37,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:37,199 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] [2024-11-16 09:59:37,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 09:59:37,199 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:37,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -196654053, now seen corresponding path program 1 times [2024-11-16 09:59:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:37,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776490032] [2024-11-16 09:59:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776490032] [2024-11-16 09:59:37,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776490032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:37,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:37,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:37,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057759257] [2024-11-16 09:59:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:37,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:37,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:37,381 INFO L87 Difference]: Start difference. First operand 21905 states and 32123 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:42,700 INFO L93 Difference]: Finished difference Result 77688 states and 117527 transitions. [2024-11-16 09:59:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:59:42,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:42,860 INFO L225 Difference]: With dead ends: 77688 [2024-11-16 09:59:42,860 INFO L226 Difference]: Without dead ends: 58031 [2024-11-16 09:59:42,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:59:42,912 INFO L432 NwaCegarLoop]: 589 mSDtfsCounter, 1670 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:42,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 2665 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 09:59:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58031 states. [2024-11-16 09:59:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58031 to 40299. [2024-11-16 09:59:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40299 states, 36858 states have (on average 1.444136958055239) internal successors, (53228), 37015 states have internal predecessors, (53228), 2313 states have call successors, (2313), 937 states have call predecessors, (2313), 1126 states have return successors, (4728), 2475 states have call predecessors, (4728), 2309 states have call successors, (4728) [2024-11-16 09:59:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40299 states to 40299 states and 60269 transitions. [2024-11-16 09:59:45,826 INFO L78 Accepts]: Start accepts. Automaton has 40299 states and 60269 transitions. Word has length 140 [2024-11-16 09:59:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:59:45,827 INFO L471 AbstractCegarLoop]: Abstraction has 40299 states and 60269 transitions. [2024-11-16 09:59:45,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 40299 states and 60269 transitions. [2024-11-16 09:59:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-16 09:59:45,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:59:45,861 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] [2024-11-16 09:59:45,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 09:59:45,862 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:59:45,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:59:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1020335524, now seen corresponding path program 1 times [2024-11-16 09:59:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:59:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74454745] [2024-11-16 09:59:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:59:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:59:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:59:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 09:59:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:59:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 09:59:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 09:59:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:59:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:59:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:59:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74454745] [2024-11-16 09:59:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74454745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:59:46,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:59:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:59:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291754302] [2024-11-16 09:59:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:59:46,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:59:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:59:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:59:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:59:46,314 INFO L87 Difference]: Start difference. First operand 40299 states and 60269 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-11-16 09:59:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:59:54,857 INFO L93 Difference]: Finished difference Result 147520 states and 226195 transitions. [2024-11-16 09:59:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:59:54,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 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 140 [2024-11-16 09:59:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:59:55,212 INFO L225 Difference]: With dead ends: 147520 [2024-11-16 09:59:55,212 INFO L226 Difference]: Without dead ends: 109469 [2024-11-16 09:59:55,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:59:55,292 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 1629 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:59:55,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 2674 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 09:59:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109469 states.