./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.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 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:07:35,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:07:36,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:07:36,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:07:36,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:07:36,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:07:36,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:07:36,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:07:36,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:07:36,043 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:07:36,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:07:36,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:07:36,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:07:36,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:07:36,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:07:36,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:07:36,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:07:36,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:07:36,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:07:36,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:07:36,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:07:36,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:07:36,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:07:36,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:07:36,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:07:36,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:07:36,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:07:36,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:07:36,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:07:36,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:07:36,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:07:36,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:07:36,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:07:36,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:07:36,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:07:36,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:07:36,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:07:36,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:07:36,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:07:36,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:07:36,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:07:36,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:07:36,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b [2024-11-22 04:07:36,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:07:36,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:07:36,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:07:36,375 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:07:36,375 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:07:36,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-11-22 04:07:38,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:07:38,255 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:07:38,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-11-22 04:07:38,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c4a785e/2c06ac3fa04d4fc6ad6d9bc756acb9c5/FLAG86195fc86 [2024-11-22 04:07:38,286 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c4a785e/2c06ac3fa04d4fc6ad6d9bc756acb9c5 [2024-11-22 04:07:38,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:07:38,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:07:38,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:07:38,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:07:38,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:07:38,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22adfefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38, skipping insertion in model container [2024-11-22 04:07:38,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:07:38,547 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.06.cil-1.c[911,924] [2024-11-22 04:07:38,590 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.06.cil-1.c[8416,8429] [2024-11-22 04:07:38,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:07:38,638 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:07:38,647 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.06.cil-1.c[911,924] [2024-11-22 04:07:38,663 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.06.cil-1.c[8416,8429] [2024-11-22 04:07:38,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:07:38,711 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:07:38,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38 WrapperNode [2024-11-22 04:07:38,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:07:38,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:07:38,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:07:38,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:07:38,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,762 INFO L138 Inliner]: procedures = 67, calls = 80, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 752 [2024-11-22 04:07:38,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:07:38,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:07:38,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:07:38,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:07:38,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,791 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 04:07:38,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:07:38,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:07:38,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:07:38,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:07:38,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (1/1) ... [2024-11-22 04:07:38,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:07:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:07:38,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 04:07:38,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 04:07:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:07:38,931 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:07:38,932 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:07:38,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:07:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-22 04:07:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-22 04:07:38,933 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-22 04:07:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-22 04:07:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-22 04:07:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-22 04:07:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:07:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:07:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:07:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:07:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:07:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-22 04:07:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-22 04:07:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:07:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:07:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:07:38,936 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:07:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:07:38,937 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:07:39,031 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:07:39,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:07:39,586 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-11-22 04:07:39,586 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2024-11-22 04:07:39,710 INFO L? ?]: Removed 98 outVars from TransFormulas that were not future-live. [2024-11-22 04:07:39,711 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:07:39,737 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:07:39,741 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-22 04:07:39,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:07:39 BoogieIcfgContainer [2024-11-22 04:07:39,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:07:39,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:07:39,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:07:39,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:07:39,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:07:38" (1/3) ... [2024-11-22 04:07:39,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773735cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:07:39, skipping insertion in model container [2024-11-22 04:07:39,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:07:38" (2/3) ... [2024-11-22 04:07:39,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773735cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:07:39, skipping insertion in model container [2024-11-22 04:07:39,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:07:39" (3/3) ... [2024-11-22 04:07:39,750 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-1.c [2024-11-22 04:07:39,765 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:07:39,766 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:07:39,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:07:39,848 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;@43c8e56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:07:39,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:07:39,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 364 states, 308 states have (on average 1.5974025974025974) internal successors, (492), 316 states have internal predecessors, (492), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 04:07:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:07:39,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:39,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:39,867 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:39,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -287034889, now seen corresponding path program 1 times [2024-11-22 04:07:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:39,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512644461] [2024-11-22 04:07:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:39,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:40,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:40,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512644461] [2024-11-22 04:07:40,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512644461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:40,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:40,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:07:40,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213659214] [2024-11-22 04:07:40,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:40,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:07:40,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:07:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:40,407 INFO L87 Difference]: Start difference. First operand has 364 states, 308 states have (on average 1.5974025974025974) internal successors, (492), 316 states have internal predecessors, (492), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:41,434 INFO L93 Difference]: Finished difference Result 824 states and 1287 transitions. [2024-11-22 04:07:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:07:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:07:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:41,453 INFO L225 Difference]: With dead ends: 824 [2024-11-22 04:07:41,453 INFO L226 Difference]: Without dead ends: 472 [2024-11-22 04:07:41,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:41,467 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 401 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:41,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1190 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 04:07:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-22 04:07:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 465. [2024-11-22 04:07:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 390 states have (on average 1.4897435897435898) internal successors, (581), 397 states have internal predecessors, (581), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-22 04:07:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 684 transitions. [2024-11-22 04:07:41,564 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 684 transitions. Word has length 65 [2024-11-22 04:07:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:41,564 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 684 transitions. [2024-11-22 04:07:41,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 684 transitions. [2024-11-22 04:07:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:07:41,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:41,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:41,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:07:41,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:41,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:41,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1391853751, now seen corresponding path program 1 times [2024-11-22 04:07:41,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035899547] [2024-11-22 04:07:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:41,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035899547] [2024-11-22 04:07:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035899547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:41,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:41,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:41,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933611540] [2024-11-22 04:07:41,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:41,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:41,761 INFO L87 Difference]: Start difference. First operand 465 states and 684 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:42,489 INFO L93 Difference]: Finished difference Result 832 states and 1199 transitions. [2024-11-22 04:07:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:07:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:42,500 INFO L225 Difference]: With dead ends: 832 [2024-11-22 04:07:42,503 INFO L226 Difference]: Without dead ends: 623 [2024-11-22 04:07:42,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:42,505 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 752 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:42,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1467 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:07:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-22 04:07:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 577. [2024-11-22 04:07:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 480 states have (on average 1.4729166666666667) internal successors, (707), 489 states have internal predecessors, (707), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2024-11-22 04:07:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 844 transitions. [2024-11-22 04:07:42,606 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 844 transitions. Word has length 65 [2024-11-22 04:07:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:42,606 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 844 transitions. [2024-11-22 04:07:42,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 844 transitions. [2024-11-22 04:07:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:07:42,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:42,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:42,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:07:42,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:42,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash -636732359, now seen corresponding path program 1 times [2024-11-22 04:07:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564396484] [2024-11-22 04:07:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564396484] [2024-11-22 04:07:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564396484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:42,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:07:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135707567] [2024-11-22 04:07:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:42,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:07:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:07:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:07:42,688 INFO L87 Difference]: Start difference. First operand 577 states and 844 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-22 04:07:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:42,929 INFO L93 Difference]: Finished difference Result 1483 states and 2126 transitions. [2024-11-22 04:07:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:07:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-11-22 04:07:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:42,941 INFO L225 Difference]: With dead ends: 1483 [2024-11-22 04:07:42,942 INFO L226 Difference]: Without dead ends: 1168 [2024-11-22 04:07:42,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:07:42,946 INFO L432 NwaCegarLoop]: 643 mSDtfsCounter, 623 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:42,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1217 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:07:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-22 04:07:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1145. [2024-11-22 04:07:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 938 states have (on average 1.4211087420042643) internal successors, (1333), 955 states have internal predecessors, (1333), 124 states have call successors, (124), 71 states have call predecessors, (124), 81 states have return successors, (158), 122 states have call predecessors, (158), 120 states have call successors, (158) [2024-11-22 04:07:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1615 transitions. [2024-11-22 04:07:43,047 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1615 transitions. Word has length 65 [2024-11-22 04:07:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:43,048 INFO L471 AbstractCegarLoop]: Abstraction has 1145 states and 1615 transitions. [2024-11-22 04:07:43,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-22 04:07:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1615 transitions. [2024-11-22 04:07:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:07:43,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:43,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:43,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:07:43,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:43,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1736898770, now seen corresponding path program 1 times [2024-11-22 04:07:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:43,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357263944] [2024-11-22 04:07:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357263944] [2024-11-22 04:07:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357263944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:43,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:43,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546505411] [2024-11-22 04:07:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:43,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:43,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:43,152 INFO L87 Difference]: Start difference. First operand 1145 states and 1615 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-22 04:07:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:43,737 INFO L93 Difference]: Finished difference Result 3651 states and 5094 transitions. [2024-11-22 04:07:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 04:07:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2024-11-22 04:07:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:43,747 INFO L225 Difference]: With dead ends: 3651 [2024-11-22 04:07:43,748 INFO L226 Difference]: Without dead ends: 1426 [2024-11-22 04:07:43,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:43,755 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 1529 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:43,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2323 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:07:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2024-11-22 04:07:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1061. [2024-11-22 04:07:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 854 states have (on average 1.3934426229508197) internal successors, (1190), 871 states have internal predecessors, (1190), 124 states have call successors, (124), 71 states have call predecessors, (124), 81 states have return successors, (149), 122 states have call predecessors, (149), 120 states have call successors, (149) [2024-11-22 04:07:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1463 transitions. [2024-11-22 04:07:43,877 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1463 transitions. Word has length 66 [2024-11-22 04:07:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:43,880 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 1463 transitions. [2024-11-22 04:07:43,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-22 04:07:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1463 transitions. [2024-11-22 04:07:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:07:43,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:43,882 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] [2024-11-22 04:07:43,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:07:43,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:43,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:43,883 INFO L85 PathProgramCache]: Analyzing trace with hash 98372728, now seen corresponding path program 1 times [2024-11-22 04:07:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:43,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132181226] [2024-11-22 04:07:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:43,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132181226] [2024-11-22 04:07:43,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132181226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:43,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515406215] [2024-11-22 04:07:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:43,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:43,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:43,979 INFO L87 Difference]: Start difference. First operand 1061 states and 1463 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:07:44,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:44,058 INFO L93 Difference]: Finished difference Result 1905 states and 2596 transitions. [2024-11-22 04:07:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:07:44,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-11-22 04:07:44,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:44,064 INFO L225 Difference]: With dead ends: 1905 [2024-11-22 04:07:44,065 INFO L226 Difference]: Without dead ends: 1106 [2024-11-22 04:07:44,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:44,069 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 0 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:44,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2565 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:07:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-22 04:07:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-22 04:07:44,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 890 states have (on average 1.3775280898876405) internal successors, (1226), 907 states have internal predecessors, (1226), 124 states have call successors, (124), 71 states have call predecessors, (124), 90 states have return successors, (158), 131 states have call predecessors, (158), 120 states have call successors, (158) [2024-11-22 04:07:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1508 transitions. [2024-11-22 04:07:44,120 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1508 transitions. Word has length 67 [2024-11-22 04:07:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:44,123 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1508 transitions. [2024-11-22 04:07:44,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:07:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1508 transitions. [2024-11-22 04:07:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:07:44,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:44,125 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] [2024-11-22 04:07:44,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:07:44,125 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:44,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1484576122, now seen corresponding path program 1 times [2024-11-22 04:07:44,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:44,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24639781] [2024-11-22 04:07:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:44,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:44,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:44,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24639781] [2024-11-22 04:07:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24639781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:44,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931174273] [2024-11-22 04:07:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:44,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:44,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:44,239 INFO L87 Difference]: Start difference. First operand 1106 states and 1508 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:44,853 INFO L93 Difference]: Finished difference Result 2002 states and 2664 transitions. [2024-11-22 04:07:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 04:07:44,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2024-11-22 04:07:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:44,860 INFO L225 Difference]: With dead ends: 2002 [2024-11-22 04:07:44,860 INFO L226 Difference]: Without dead ends: 1245 [2024-11-22 04:07:44,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:07:44,864 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 753 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:44,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1167 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:07:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2024-11-22 04:07:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1115. [2024-11-22 04:07:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 899 states have (on average 1.3726362625139044) internal successors, (1234), 914 states have internal predecessors, (1234), 125 states have call successors, (125), 72 states have call predecessors, (125), 89 states have return successors, (153), 132 states have call predecessors, (153), 121 states have call successors, (153) [2024-11-22 04:07:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1512 transitions. [2024-11-22 04:07:44,910 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1512 transitions. Word has length 67 [2024-11-22 04:07:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:44,911 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1512 transitions. [2024-11-22 04:07:44,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1512 transitions. [2024-11-22 04:07:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:07:44,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:44,912 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] [2024-11-22 04:07:44,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 04:07:44,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:44,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1350562616, now seen corresponding path program 1 times [2024-11-22 04:07:44,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:44,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766753881] [2024-11-22 04:07:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:44,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766753881] [2024-11-22 04:07:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766753881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:44,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:44,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:07:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722004597] [2024-11-22 04:07:44,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:44,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:07:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:07:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:07:44,986 INFO L87 Difference]: Start difference. First operand 1115 states and 1512 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:45,418 INFO L93 Difference]: Finished difference Result 2840 states and 3818 transitions. [2024-11-22 04:07:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:07:45,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2024-11-22 04:07:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:45,431 INFO L225 Difference]: With dead ends: 2840 [2024-11-22 04:07:45,432 INFO L226 Difference]: Without dead ends: 1990 [2024-11-22 04:07:45,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:45,436 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 704 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:45,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 595 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:07:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-11-22 04:07:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1980. [2024-11-22 04:07:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1562 states have (on average 1.3297055057618439) internal successors, (2077), 1591 states have internal predecessors, (2077), 235 states have call successors, (235), 136 states have call predecessors, (235), 181 states have return successors, (351), 259 states have call predecessors, (351), 231 states have call successors, (351) [2024-11-22 04:07:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2663 transitions. [2024-11-22 04:07:45,638 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2663 transitions. Word has length 67 [2024-11-22 04:07:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:45,638 INFO L471 AbstractCegarLoop]: Abstraction has 1980 states and 2663 transitions. [2024-11-22 04:07:45,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:07:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2663 transitions. [2024-11-22 04:07:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:07:45,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:45,644 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] [2024-11-22 04:07:45,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 04:07:45,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:45,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1503094439, now seen corresponding path program 1 times [2024-11-22 04:07:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875332973] [2024-11-22 04:07:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:45,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875332973] [2024-11-22 04:07:45,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875332973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:45,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:07:45,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145908509] [2024-11-22 04:07:45,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:45,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:07:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:45,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:07:45,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:07:45,707 INFO L87 Difference]: Start difference. First operand 1980 states and 2663 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:07:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:45,867 INFO L93 Difference]: Finished difference Result 3549 states and 4823 transitions. [2024-11-22 04:07:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:07:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-11-22 04:07:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:45,876 INFO L225 Difference]: With dead ends: 3549 [2024-11-22 04:07:45,876 INFO L226 Difference]: Without dead ends: 242 [2024-11-22 04:07:45,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:07:45,884 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 482 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:45,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 501 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:07:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-22 04:07:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-22 04:07:45,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 213 states have (on average 1.5352112676056338) internal successors, (327), 215 states have internal predecessors, (327), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 04:07:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 369 transitions. [2024-11-22 04:07:45,900 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 369 transitions. Word has length 68 [2024-11-22 04:07:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:45,901 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 369 transitions. [2024-11-22 04:07:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:07:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 369 transitions. [2024-11-22 04:07:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:45,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:45,902 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] [2024-11-22 04:07:45,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 04:07:45,902 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:45,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:45,902 INFO L85 PathProgramCache]: Analyzing trace with hash -527671569, now seen corresponding path program 1 times [2024-11-22 04:07:45,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:45,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474715239] [2024-11-22 04:07:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474715239] [2024-11-22 04:07:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474715239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:07:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659982199] [2024-11-22 04:07:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:07:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:07:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:07:45,953 INFO L87 Difference]: Start difference. First operand 242 states and 369 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:45,969 INFO L93 Difference]: Finished difference Result 474 states and 723 transitions. [2024-11-22 04:07:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:07:45,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:45,972 INFO L225 Difference]: With dead ends: 474 [2024-11-22 04:07:45,972 INFO L226 Difference]: Without dead ends: 242 [2024-11-22 04:07:45,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:07:45,973 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 359 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:45,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 368 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:07:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-22 04:07:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-22 04:07:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 213 states have (on average 1.5305164319248827) internal successors, (326), 215 states have internal predecessors, (326), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-22 04:07:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 368 transitions. [2024-11-22 04:07:45,986 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 368 transitions. Word has length 113 [2024-11-22 04:07:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:45,986 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 368 transitions. [2024-11-22 04:07:45,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 368 transitions. [2024-11-22 04:07:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:45,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:45,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:07:45,988 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:45,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1339037105, now seen corresponding path program 1 times [2024-11-22 04:07:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334252632] [2024-11-22 04:07:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:46,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:46,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334252632] [2024-11-22 04:07:46,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334252632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:46,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206941539] [2024-11-22 04:07:46,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:46,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:46,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:46,136 INFO L87 Difference]: Start difference. First operand 242 states and 368 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:46,944 INFO L93 Difference]: Finished difference Result 736 states and 1143 transitions. [2024-11-22 04:07:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:46,949 INFO L225 Difference]: With dead ends: 736 [2024-11-22 04:07:46,949 INFO L226 Difference]: Without dead ends: 509 [2024-11-22 04:07:46,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:46,951 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 659 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:46,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 2040 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:07:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-22 04:07:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 477. [2024-11-22 04:07:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 423 states have (on average 1.5460992907801419) internal successors, (654), 427 states have internal predecessors, (654), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-22 04:07:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 737 transitions. [2024-11-22 04:07:46,968 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 737 transitions. Word has length 113 [2024-11-22 04:07:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:46,969 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 737 transitions. [2024-11-22 04:07:46,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 737 transitions. [2024-11-22 04:07:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:46,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:46,970 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] [2024-11-22 04:07:46,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:07:46,970 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:46,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:46,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1604544973, now seen corresponding path program 1 times [2024-11-22 04:07:46,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:46,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981430772] [2024-11-22 04:07:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:47,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981430772] [2024-11-22 04:07:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981430772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:47,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:47,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099711764] [2024-11-22 04:07:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:47,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:47,062 INFO L87 Difference]: Start difference. First operand 477 states and 737 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:47,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:47,591 INFO L93 Difference]: Finished difference Result 1440 states and 2249 transitions. [2024-11-22 04:07:47,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:47,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:47,597 INFO L225 Difference]: With dead ends: 1440 [2024-11-22 04:07:47,597 INFO L226 Difference]: Without dead ends: 980 [2024-11-22 04:07:47,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:47,600 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 655 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:47,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1924 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:07:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-22 04:07:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 937. [2024-11-22 04:07:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 837 states have (on average 1.5495818399044206) internal successors, (1297), 845 states have internal predecessors, (1297), 69 states have call successors, (69), 25 states have call predecessors, (69), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-22 04:07:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1456 transitions. [2024-11-22 04:07:47,638 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1456 transitions. Word has length 113 [2024-11-22 04:07:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:47,639 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1456 transitions. [2024-11-22 04:07:47,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1456 transitions. [2024-11-22 04:07:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:47,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:47,641 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] [2024-11-22 04:07:47,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 04:07:47,641 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:47,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1071447409, now seen corresponding path program 1 times [2024-11-22 04:07:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856454816] [2024-11-22 04:07:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:47,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:47,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856454816] [2024-11-22 04:07:47,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856454816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:47,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:47,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:47,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425816601] [2024-11-22 04:07:47,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:47,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:47,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:47,755 INFO L87 Difference]: Start difference. First operand 937 states and 1456 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:48,260 INFO L93 Difference]: Finished difference Result 2909 states and 4590 transitions. [2024-11-22 04:07:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:48,268 INFO L225 Difference]: With dead ends: 2909 [2024-11-22 04:07:48,268 INFO L226 Difference]: Without dead ends: 1989 [2024-11-22 04:07:48,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:48,271 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 650 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:48,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1917 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:07:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2024-11-22 04:07:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1925. [2024-11-22 04:07:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1727 states have (on average 1.5628257093225246) internal successors, (2699), 1749 states have internal predecessors, (2699), 129 states have call successors, (129), 49 states have call predecessors, (129), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-22 04:07:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3034 transitions. [2024-11-22 04:07:48,338 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3034 transitions. Word has length 113 [2024-11-22 04:07:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:48,339 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3034 transitions. [2024-11-22 04:07:48,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3034 transitions. [2024-11-22 04:07:48,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:48,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:48,341 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] [2024-11-22 04:07:48,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:07:48,342 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:48,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash 187938419, now seen corresponding path program 1 times [2024-11-22 04:07:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290750436] [2024-11-22 04:07:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:48,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:48,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290750436] [2024-11-22 04:07:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290750436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:48,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:07:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137113737] [2024-11-22 04:07:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:48,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:07:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:07:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:48,408 INFO L87 Difference]: Start difference. First operand 1925 states and 3034 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:48,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:48,657 INFO L93 Difference]: Finished difference Result 4132 states and 6655 transitions. [2024-11-22 04:07:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:07:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:48,666 INFO L225 Difference]: With dead ends: 4132 [2024-11-22 04:07:48,666 INFO L226 Difference]: Without dead ends: 2222 [2024-11-22 04:07:48,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:48,671 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 476 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:48,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 714 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:07:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2024-11-22 04:07:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1925. [2024-11-22 04:07:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1727 states have (on average 1.5576143601621308) internal successors, (2690), 1749 states have internal predecessors, (2690), 129 states have call successors, (129), 49 states have call predecessors, (129), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-22 04:07:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3025 transitions. [2024-11-22 04:07:48,752 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3025 transitions. Word has length 113 [2024-11-22 04:07:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:48,753 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3025 transitions. [2024-11-22 04:07:48,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3025 transitions. [2024-11-22 04:07:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:48,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:48,756 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] [2024-11-22 04:07:48,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:07:48,757 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:48,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash 159438129, now seen corresponding path program 1 times [2024-11-22 04:07:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:48,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316858512] [2024-11-22 04:07:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:48,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:48,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316858512] [2024-11-22 04:07:48,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316858512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:48,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:48,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:48,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781557225] [2024-11-22 04:07:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:48,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:48,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:48,865 INFO L87 Difference]: Start difference. First operand 1925 states and 3025 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:49,533 INFO L93 Difference]: Finished difference Result 6065 states and 9724 transitions. [2024-11-22 04:07:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:49,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:49,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:49,570 INFO L225 Difference]: With dead ends: 6065 [2024-11-22 04:07:49,571 INFO L226 Difference]: Without dead ends: 4157 [2024-11-22 04:07:49,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:49,587 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 637 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:49,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1801 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:07:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2024-11-22 04:07:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4063. [2024-11-22 04:07:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 3651 states have (on average 1.575458778416872) internal successors, (5752), 3719 states have internal predecessors, (5752), 249 states have call successors, (249), 97 states have call predecessors, (249), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-22 04:07:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 6535 transitions. [2024-11-22 04:07:49,894 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 6535 transitions. Word has length 113 [2024-11-22 04:07:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:49,894 INFO L471 AbstractCegarLoop]: Abstraction has 4063 states and 6535 transitions. [2024-11-22 04:07:49,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 6535 transitions. [2024-11-22 04:07:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:49,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:49,898 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] [2024-11-22 04:07:49,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:07:49,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:49,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1781143885, now seen corresponding path program 1 times [2024-11-22 04:07:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:49,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384049294] [2024-11-22 04:07:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:50,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:50,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384049294] [2024-11-22 04:07:50,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384049294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:50,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:50,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:07:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105101765] [2024-11-22 04:07:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:50,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:07:50,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:07:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:50,005 INFO L87 Difference]: Start difference. First operand 4063 states and 6535 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:50,410 INFO L93 Difference]: Finished difference Result 8840 states and 14583 transitions. [2024-11-22 04:07:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:07:50,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:50,434 INFO L225 Difference]: With dead ends: 8840 [2024-11-22 04:07:50,434 INFO L226 Difference]: Without dead ends: 4792 [2024-11-22 04:07:50,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:50,448 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 472 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:50,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 700 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:07:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2024-11-22 04:07:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4063. [2024-11-22 04:07:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 3651 states have (on average 1.5708025198575732) internal successors, (5735), 3719 states have internal predecessors, (5735), 249 states have call successors, (249), 97 states have call predecessors, (249), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-22 04:07:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 6518 transitions. [2024-11-22 04:07:50,774 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 6518 transitions. Word has length 113 [2024-11-22 04:07:50,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:50,775 INFO L471 AbstractCegarLoop]: Abstraction has 4063 states and 6518 transitions. [2024-11-22 04:07:50,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:50,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 6518 transitions. [2024-11-22 04:07:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:50,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:50,779 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] [2024-11-22 04:07:50,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:07:50,780 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:50,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:50,780 INFO L85 PathProgramCache]: Analyzing trace with hash 95919345, now seen corresponding path program 1 times [2024-11-22 04:07:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996348048] [2024-11-22 04:07:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:50,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996348048] [2024-11-22 04:07:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996348048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:07:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889271403] [2024-11-22 04:07:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:50,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:07:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:07:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:50,876 INFO L87 Difference]: Start difference. First operand 4063 states and 6518 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:51,412 INFO L93 Difference]: Finished difference Result 8759 states and 14387 transitions. [2024-11-22 04:07:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:07:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:51,454 INFO L225 Difference]: With dead ends: 8759 [2024-11-22 04:07:51,455 INFO L226 Difference]: Without dead ends: 4711 [2024-11-22 04:07:51,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:51,473 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 467 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:51,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 690 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:07:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2024-11-22 04:07:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4063. [2024-11-22 04:07:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4063 states, 3651 states have (on average 1.5661462612982744) internal successors, (5718), 3719 states have internal predecessors, (5718), 249 states have call successors, (249), 97 states have call predecessors, (249), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-22 04:07:51,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 6501 transitions. [2024-11-22 04:07:51,829 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 6501 transitions. Word has length 113 [2024-11-22 04:07:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:51,829 INFO L471 AbstractCegarLoop]: Abstraction has 4063 states and 6501 transitions. [2024-11-22 04:07:51,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 6501 transitions. [2024-11-22 04:07:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:51,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:51,833 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] [2024-11-22 04:07:51,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:07:51,834 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:51,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -674814221, now seen corresponding path program 1 times [2024-11-22 04:07:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682545629] [2024-11-22 04:07:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682545629] [2024-11-22 04:07:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682545629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:51,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787570659] [2024-11-22 04:07:51,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:51,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:51,945 INFO L87 Difference]: Start difference. First operand 4063 states and 6501 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:52,853 INFO L93 Difference]: Finished difference Result 13235 states and 21649 transitions. [2024-11-22 04:07:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:52,893 INFO L225 Difference]: With dead ends: 13235 [2024-11-22 04:07:52,893 INFO L226 Difference]: Without dead ends: 9189 [2024-11-22 04:07:52,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:52,900 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 655 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:52,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1863 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:07:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9189 states. [2024-11-22 04:07:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9189 to 8507. [2024-11-22 04:07:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 7629 states have (on average 1.5781884912832613) internal successors, (12040), 7843 states have internal predecessors, (12040), 473 states have call successors, (473), 193 states have call predecessors, (473), 404 states have return successors, (1558), 502 states have call predecessors, (1558), 471 states have call successors, (1558) [2024-11-22 04:07:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 14071 transitions. [2024-11-22 04:07:53,408 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 14071 transitions. Word has length 113 [2024-11-22 04:07:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:53,408 INFO L471 AbstractCegarLoop]: Abstraction has 8507 states and 14071 transitions. [2024-11-22 04:07:53,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 14071 transitions. [2024-11-22 04:07:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:53,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:53,418 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] [2024-11-22 04:07:53,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:07:53,418 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:53,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1261090443, now seen corresponding path program 1 times [2024-11-22 04:07:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391086674] [2024-11-22 04:07:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391086674] [2024-11-22 04:07:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391086674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:53,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:53,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:07:53,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502286122] [2024-11-22 04:07:53,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:53,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:07:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:53,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:07:53,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:07:53,505 INFO L87 Difference]: Start difference. First operand 8507 states and 14071 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:54,368 INFO L93 Difference]: Finished difference Result 18214 states and 30973 transitions. [2024-11-22 04:07:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:07:54,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:54,418 INFO L225 Difference]: With dead ends: 18214 [2024-11-22 04:07:54,419 INFO L226 Difference]: Without dead ends: 9722 [2024-11-22 04:07:54,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:54,453 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 462 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:54,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 670 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:07:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2024-11-22 04:07:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 8507. [2024-11-22 04:07:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 7629 states have (on average 1.5738628915978503) internal successors, (12007), 7843 states have internal predecessors, (12007), 473 states have call successors, (473), 193 states have call predecessors, (473), 404 states have return successors, (1558), 502 states have call predecessors, (1558), 471 states have call successors, (1558) [2024-11-22 04:07:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 14038 transitions. [2024-11-22 04:07:55,187 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 14038 transitions. Word has length 113 [2024-11-22 04:07:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:55,187 INFO L471 AbstractCegarLoop]: Abstraction has 8507 states and 14038 transitions. [2024-11-22 04:07:55,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 14038 transitions. [2024-11-22 04:07:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:55,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:55,193 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] [2024-11-22 04:07:55,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:07:55,194 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:55,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1075302067, now seen corresponding path program 1 times [2024-11-22 04:07:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:55,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429156287] [2024-11-22 04:07:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:55,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429156287] [2024-11-22 04:07:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429156287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775659317] [2024-11-22 04:07:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:55,358 INFO L87 Difference]: Start difference. First operand 8507 states and 14038 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:07:56,547 INFO L93 Difference]: Finished difference Result 27157 states and 46491 transitions. [2024-11-22 04:07:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:07:56,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:07:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:07:56,617 INFO L225 Difference]: With dead ends: 27157 [2024-11-22 04:07:56,617 INFO L226 Difference]: Without dead ends: 18667 [2024-11-22 04:07:56,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:07:56,641 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 673 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:07:56,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1827 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:07:56,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18667 states. [2024-11-22 04:07:58,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18667 to 17827. [2024-11-22 04:07:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17827 states, 15871 states have (on average 1.578035410497133) internal successors, (25045), 16539 states have internal predecessors, (25045), 905 states have call successors, (905), 385 states have call predecessors, (905), 1050 states have return successors, (5126), 966 states have call predecessors, (5126), 903 states have call successors, (5126) [2024-11-22 04:07:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17827 states to 17827 states and 31076 transitions. [2024-11-22 04:07:58,597 INFO L78 Accepts]: Start accepts. Automaton has 17827 states and 31076 transitions. Word has length 113 [2024-11-22 04:07:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:07:58,597 INFO L471 AbstractCegarLoop]: Abstraction has 17827 states and 31076 transitions. [2024-11-22 04:07:58,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:07:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 17827 states and 31076 transitions. [2024-11-22 04:07:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:07:58,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:07:58,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:07:58,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:07:58,608 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:07:58,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:07:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1343182411, now seen corresponding path program 1 times [2024-11-22 04:07:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:07:58,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568627944] [2024-11-22 04:07:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:07:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:07:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:07:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:07:58,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:07:58,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568627944] [2024-11-22 04:07:58,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568627944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:07:58,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:07:58,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:07:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215456581] [2024-11-22 04:07:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:07:58,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:07:58,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:07:58,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:07:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:07:58,694 INFO L87 Difference]: Start difference. First operand 17827 states and 31076 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:08:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:01,772 INFO L93 Difference]: Finished difference Result 56552 states and 105145 transitions. [2024-11-22 04:08:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:01,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:08:01,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:02,020 INFO L225 Difference]: With dead ends: 56552 [2024-11-22 04:08:02,020 INFO L226 Difference]: Without dead ends: 38742 [2024-11-22 04:08:02,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:08:02,068 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 607 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:02,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1820 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:08:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38742 states. [2024-11-22 04:08:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38742 to 37583. [2024-11-22 04:08:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37583 states, 33017 states have (on average 1.5746736529666536) internal successors, (51991), 35079 states have internal predecessors, (51991), 1737 states have call successors, (1737), 769 states have call predecessors, (1737), 2828 states have return successors, (18374), 1862 states have call predecessors, (18374), 1735 states have call successors, (18374) [2024-11-22 04:08:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37583 states to 37583 states and 72102 transitions. [2024-11-22 04:08:06,045 INFO L78 Accepts]: Start accepts. Automaton has 37583 states and 72102 transitions. Word has length 113 [2024-11-22 04:08:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:06,045 INFO L471 AbstractCegarLoop]: Abstraction has 37583 states and 72102 transitions. [2024-11-22 04:08:06,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:08:06,046 INFO L276 IsEmpty]: Start isEmpty. Operand 37583 states and 72102 transitions. [2024-11-22 04:08:06,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:08:06,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:06,067 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] [2024-11-22 04:08:06,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:08:06,067 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:06,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1072653939, now seen corresponding path program 1 times [2024-11-22 04:08:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:06,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724898483] [2024-11-22 04:08:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:08:06,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724898483] [2024-11-22 04:08:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724898483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802256227] [2024-11-22 04:08:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:06,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:06,190 INFO L87 Difference]: Start difference. First operand 37583 states and 72102 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:08:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:13,268 INFO L93 Difference]: Finished difference Result 117941 states and 252859 transitions. [2024-11-22 04:08:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:08:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:13,744 INFO L225 Difference]: With dead ends: 117941 [2024-11-22 04:08:13,744 INFO L226 Difference]: Without dead ends: 80375 [2024-11-22 04:08:13,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:08:13,874 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 605 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:13,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1709 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:08:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80375 states. [2024-11-22 04:08:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80375 to 79089. [2024-11-22 04:08:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79089 states, 67909 states have (on average 1.5563327394012576) internal successors, (105689), 74217 states have internal predecessors, (105689), 3337 states have call successors, (3337), 1537 states have call predecessors, (3337), 7842 states have return successors, (69382), 3590 states have call predecessors, (69382), 3335 states have call successors, (69382) [2024-11-22 04:08:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79089 states to 79089 states and 178408 transitions. [2024-11-22 04:08:24,657 INFO L78 Accepts]: Start accepts. Automaton has 79089 states and 178408 transitions. Word has length 113 [2024-11-22 04:08:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:24,657 INFO L471 AbstractCegarLoop]: Abstraction has 79089 states and 178408 transitions. [2024-11-22 04:08:24,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:08:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 79089 states and 178408 transitions. [2024-11-22 04:08:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 04:08:24,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:24,764 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] [2024-11-22 04:08:24,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:08:24,764 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:24,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1897457163, now seen corresponding path program 1 times [2024-11-22 04:08:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962498297] [2024-11-22 04:08:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:08:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962498297] [2024-11-22 04:08:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962498297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367314946] [2024-11-22 04:08:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:24,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:24,882 INFO L87 Difference]: Start difference. First operand 79089 states and 178408 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:08:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:31,365 INFO L93 Difference]: Finished difference Result 158929 states and 359607 transitions. [2024-11-22 04:08:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:08:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2024-11-22 04:08:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:31,764 INFO L225 Difference]: With dead ends: 158929 [2024-11-22 04:08:31,764 INFO L226 Difference]: Without dead ends: 79857 [2024-11-22 04:08:31,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:31,938 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 0 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:31,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79857 states.