./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.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.10.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 5fa3500dbb7b48d33bda6025d194df10b5d868e3a16ab8452fef68790ebc5c6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:08:19,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:08:19,198 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:08:19,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:08:19,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:08:19,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:08:19,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:08:19,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:08:19,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:08:19,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:08:19,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:08:19,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:08:19,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:08:19,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:08:19,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:08:19,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:08:19,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:08:19,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:08:19,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:08:19,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:08:19,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:08:19,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:08:19,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:08:19,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:08:19,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:08:19,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:08:19,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:08:19,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:08:19,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:08:19,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:08:19,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:08:19,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:08:19,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:08:19,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:08:19,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:08:19,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:08:19,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:08:19,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:08:19,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:08:19,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:08:19,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:08:19,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:08:19,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fa3500dbb7b48d33bda6025d194df10b5d868e3a16ab8452fef68790ebc5c6f [2024-11-22 04:08:19,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:08:19,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:08:19,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:08:19,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:08:19,457 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:08:19,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2024-11-22 04:08:20,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:08:21,149 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:08:21,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2024-11-22 04:08:21,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdd9eac9/aa3651dc165444548db3bef20007ae2c/FLAG4be0865c8 [2024-11-22 04:08:21,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdd9eac9/aa3651dc165444548db3bef20007ae2c [2024-11-22 04:08:21,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:08:21,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:08:21,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:08:21,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:08:21,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:08:21,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63048e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21, skipping insertion in model container [2024-11-22 04:08:21,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,242 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:08:21,442 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.10.cil-1.c[911,924] [2024-11-22 04:08:21,519 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.10.cil-1.c[8416,8429] [2024-11-22 04:08:21,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:08:21,648 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:08:21,659 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.10.cil-1.c[911,924] [2024-11-22 04:08:21,674 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.10.cil-1.c[8416,8429] [2024-11-22 04:08:21,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:08:21,742 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:08:21,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21 WrapperNode [2024-11-22 04:08:21,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:08:21,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:08:21,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:08:21,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:08:21,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,840 INFO L138 Inliner]: procedures = 75, calls = 92, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 992 [2024-11-22 04:08:21,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:08:21,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:08:21,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:08:21,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:08:21,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,878 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 04:08:21,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:08:21,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:08:21,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:08:21,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:08:21,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (1/1) ... [2024-11-22 04:08:21,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:08:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:08:21,951 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 04:08:21,954 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 04:08:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:08:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:08:21,996 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:08:21,996 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-22 04:08:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-22 04:08:21,997 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:08:21,997 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:08:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:08:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:08:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-22 04:08:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-22 04:08:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:08:21,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:08:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:08:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:08:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-22 04:08:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-22 04:08:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-22 04:08:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-22 04:08:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-22 04:08:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-22 04:08:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:08:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:08:22,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:08:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:08:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:08:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-22 04:08:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-22 04:08:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:08:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:08:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:08:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:08:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:08:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:08:22,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:08:22,117 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:08:22,806 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2024-11-22 04:08:22,807 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 04:08:23,016 INFO L? ?]: Removed 122 outVars from TransFormulas that were not future-live. [2024-11-22 04:08:23,017 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:08:23,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:08:23,050 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-22 04:08:23,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:23 BoogieIcfgContainer [2024-11-22 04:08:23,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:08:23,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:08:23,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:08:23,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:08:23,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:08:21" (1/3) ... [2024-11-22 04:08:23,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fafaab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:23, skipping insertion in model container [2024-11-22 04:08:23,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:08:21" (2/3) ... [2024-11-22 04:08:23,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fafaab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:08:23, skipping insertion in model container [2024-11-22 04:08:23,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:08:23" (3/3) ... [2024-11-22 04:08:23,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-1.c [2024-11-22 04:08:23,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:08:23,077 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:08:23,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:08:23,159 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;@4a7ab165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:08:23,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:08:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 468 states, 408 states have (on average 1.6176470588235294) internal successors, (660), 416 states have internal predecessors, (660), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 04:08:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:08:23,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:23,181 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 04:08:23,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:23,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1101038205, now seen corresponding path program 1 times [2024-11-22 04:08:23,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972680047] [2024-11-22 04:08:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:23,666 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 04:08:23,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:23,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972680047] [2024-11-22 04:08:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972680047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804848508] [2024-11-22 04:08:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:23,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:23,701 INFO L87 Difference]: Start difference. First operand has 468 states, 408 states have (on average 1.6176470588235294) internal successors, (660), 416 states have internal predecessors, (660), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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 04:08:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:24,537 INFO L93 Difference]: Finished difference Result 1028 states and 1631 transitions. [2024-11-22 04:08:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:08:24,540 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 04:08:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:24,553 INFO L225 Difference]: With dead ends: 1028 [2024-11-22 04:08:24,553 INFO L226 Difference]: Without dead ends: 576 [2024-11-22 04:08:24,558 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 04:08:24,561 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 481 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:24,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1522 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:08:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-22 04:08:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 569. [2024-11-22 04:08:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 490 states have (on average 1.5122448979591836) internal successors, (741), 497 states have internal predecessors, (741), 55 states have call successors, (55), 22 states have call predecessors, (55), 22 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2024-11-22 04:08:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 852 transitions. [2024-11-22 04:08:24,632 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 852 transitions. Word has length 65 [2024-11-22 04:08:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:24,632 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 852 transitions. [2024-11-22 04:08:24,632 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 04:08:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 852 transitions. [2024-11-22 04:08:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:08:24,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:24,636 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 04:08:24,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:08:24,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:24,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1515040451, now seen corresponding path program 1 times [2024-11-22 04:08:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457176667] [2024-11-22 04:08:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:24,886 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 04:08:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:24,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457176667] [2024-11-22 04:08:24,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457176667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:24,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:24,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431191984] [2024-11-22 04:08:24,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:24,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:24,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:24,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:24,893 INFO L87 Difference]: Start difference. First operand 569 states and 852 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 04:08:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:25,703 INFO L93 Difference]: Finished difference Result 936 states and 1367 transitions. [2024-11-22 04:08:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:25,703 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 04:08:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:25,708 INFO L225 Difference]: With dead ends: 936 [2024-11-22 04:08:25,708 INFO L226 Difference]: Without dead ends: 727 [2024-11-22 04:08:25,709 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 04:08:25,710 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 996 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:25,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1791 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:08:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-22 04:08:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 681. [2024-11-22 04:08:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 580 states have (on average 1.4948275862068965) internal successors, (867), 589 states have internal predecessors, (867), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (77), 66 states have call predecessors, (77), 64 states have call successors, (77) [2024-11-22 04:08:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1012 transitions. [2024-11-22 04:08:25,808 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1012 transitions. Word has length 65 [2024-11-22 04:08:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:25,809 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1012 transitions. [2024-11-22 04:08:25,809 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 04:08:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1012 transitions. [2024-11-22 04:08:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:08:25,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:25,815 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 04:08:25,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:08:25,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:25,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash 751340735, now seen corresponding path program 1 times [2024-11-22 04:08:25,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862820226] [2024-11-22 04:08:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:25,920 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 04:08:25,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862820226] [2024-11-22 04:08:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862820226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:25,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:25,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:08:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842673801] [2024-11-22 04:08:25,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:25,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:08:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:08:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:08:25,923 INFO L87 Difference]: Start difference. First operand 681 states and 1012 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 04:08:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:26,196 INFO L93 Difference]: Finished difference Result 1587 states and 2294 transitions. [2024-11-22 04:08:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:26,199 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 04:08:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:26,206 INFO L225 Difference]: With dead ends: 1587 [2024-11-22 04:08:26,206 INFO L226 Difference]: Without dead ends: 1272 [2024-11-22 04:08:26,207 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 04:08:26,208 INFO L432 NwaCegarLoop]: 812 mSDtfsCounter, 790 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:26,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1546 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:08:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2024-11-22 04:08:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1249. [2024-11-22 04:08:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1038 states have (on average 1.4383429672447015) internal successors, (1493), 1055 states have internal predecessors, (1493), 128 states have call successors, (128), 71 states have call predecessors, (128), 81 states have return successors, (162), 126 states have call predecessors, (162), 124 states have call successors, (162) [2024-11-22 04:08:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1783 transitions. [2024-11-22 04:08:26,267 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1783 transitions. Word has length 65 [2024-11-22 04:08:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:26,268 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1783 transitions. [2024-11-22 04:08:26,268 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 04:08:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1783 transitions. [2024-11-22 04:08:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:08:26,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:26,270 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 04:08:26,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:08:26,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:26,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 359842708, now seen corresponding path program 1 times [2024-11-22 04:08:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:26,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820854050] [2024-11-22 04:08:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:26,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:26,357 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 04:08:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820854050] [2024-11-22 04:08:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820854050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:26,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:26,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:26,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114022065] [2024-11-22 04:08:26,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:26,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:26,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:26,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:26,360 INFO L87 Difference]: Start difference. First operand 1249 states and 1783 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 04:08:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:26,457 INFO L93 Difference]: Finished difference Result 2152 states and 3047 transitions. [2024-11-22 04:08:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:08:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2024-11-22 04:08:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:26,463 INFO L225 Difference]: With dead ends: 2152 [2024-11-22 04:08:26,463 INFO L226 Difference]: Without dead ends: 1269 [2024-11-22 04:08:26,465 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 04:08:26,466 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 0 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:26,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3449 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-22 04:08:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2024-11-22 04:08:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1054 states have (on average 1.426944971537002) internal successors, (1504), 1071 states have internal predecessors, (1504), 128 states have call successors, (128), 71 states have call predecessors, (128), 85 states have return successors, (169), 130 states have call predecessors, (169), 124 states have call successors, (169) [2024-11-22 04:08:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1801 transitions. [2024-11-22 04:08:26,519 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1801 transitions. Word has length 66 [2024-11-22 04:08:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:26,519 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 1801 transitions. [2024-11-22 04:08:26,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 04:08:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1801 transitions. [2024-11-22 04:08:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:08:26,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:26,520 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 04:08:26,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:08:26,521 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:26,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -669516590, now seen corresponding path program 1 times [2024-11-22 04:08:26,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:26,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652158789] [2024-11-22 04:08:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:26,593 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 04:08:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652158789] [2024-11-22 04:08:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652158789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:26,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:26,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:26,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199868917] [2024-11-22 04:08:26,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:26,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:26,596 INFO L87 Difference]: Start difference. First operand 1269 states and 1801 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 04:08:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:27,317 INFO L93 Difference]: Finished difference Result 3830 states and 5337 transitions. [2024-11-22 04:08:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 04:08:27,318 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 04:08:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:27,325 INFO L225 Difference]: With dead ends: 3830 [2024-11-22 04:08:27,325 INFO L226 Difference]: Without dead ends: 1565 [2024-11-22 04:08:27,330 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 04:08:27,331 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 1852 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:27,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 2798 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:08:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-22 04:08:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1185. [2024-11-22 04:08:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 970 states have (on average 1.4030927835051545) internal successors, (1361), 987 states have internal predecessors, (1361), 128 states have call successors, (128), 71 states have call predecessors, (128), 85 states have return successors, (157), 130 states have call predecessors, (157), 124 states have call successors, (157) [2024-11-22 04:08:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1646 transitions. [2024-11-22 04:08:27,399 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1646 transitions. Word has length 66 [2024-11-22 04:08:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:27,399 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1646 transitions. [2024-11-22 04:08:27,399 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 04:08:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1646 transitions. [2024-11-22 04:08:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:08:27,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:27,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:27,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:08:27,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:27,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 587153224, now seen corresponding path program 1 times [2024-11-22 04:08:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314085950] [2024-11-22 04:08:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:27,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:27,462 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 04:08:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314085950] [2024-11-22 04:08:27,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314085950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:27,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623830844] [2024-11-22 04:08:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:27,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:27,465 INFO L87 Difference]: Start difference. First operand 1185 states and 1646 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 04:08:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:27,521 INFO L93 Difference]: Finished difference Result 2049 states and 2794 transitions. [2024-11-22 04:08:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:08:27,522 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 04:08:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:27,527 INFO L225 Difference]: With dead ends: 2049 [2024-11-22 04:08:27,528 INFO L226 Difference]: Without dead ends: 1230 [2024-11-22 04:08:27,530 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 04:08:27,531 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 0 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3405 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 04:08:27,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3405 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-22 04:08:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2024-11-22 04:08:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1006 states have (on average 1.3886679920477136) internal successors, (1397), 1023 states have internal predecessors, (1397), 128 states have call successors, (128), 71 states have call predecessors, (128), 94 states have return successors, (166), 139 states have call predecessors, (166), 124 states have call successors, (166) [2024-11-22 04:08:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1691 transitions. [2024-11-22 04:08:27,592 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1691 transitions. Word has length 67 [2024-11-22 04:08:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:27,592 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1691 transitions. [2024-11-22 04:08:27,592 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 04:08:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1691 transitions. [2024-11-22 04:08:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:08:27,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:27,594 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 04:08:27,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 04:08:27,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:27,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1973356618, now seen corresponding path program 1 times [2024-11-22 04:08:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:27,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696147345] [2024-11-22 04:08:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:27,753 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 04:08:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696147345] [2024-11-22 04:08:27,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696147345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:27,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:27,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635110938] [2024-11-22 04:08:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:27,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:27,755 INFO L87 Difference]: Start difference. First operand 1230 states and 1691 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 04:08:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:28,685 INFO L93 Difference]: Finished difference Result 2146 states and 2860 transitions. [2024-11-22 04:08:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 04:08:28,686 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 04:08:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:28,695 INFO L225 Difference]: With dead ends: 2146 [2024-11-22 04:08:28,695 INFO L226 Difference]: Without dead ends: 1369 [2024-11-22 04:08:28,699 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 04:08:28,702 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 995 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:28,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1491 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:08:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-22 04:08:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1239. [2024-11-22 04:08:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1015 states have (on average 1.3832512315270935) internal successors, (1404), 1030 states have internal predecessors, (1404), 129 states have call successors, (129), 72 states have call predecessors, (129), 93 states have return successors, (161), 140 states have call predecessors, (161), 125 states have call successors, (161) [2024-11-22 04:08:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1694 transitions. [2024-11-22 04:08:28,769 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1694 transitions. Word has length 67 [2024-11-22 04:08:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:28,769 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1694 transitions. [2024-11-22 04:08:28,770 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 04:08:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1694 transitions. [2024-11-22 04:08:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 04:08:28,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:28,773 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 04:08:28,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 04:08:28,774 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:28,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:28,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1839343112, now seen corresponding path program 1 times [2024-11-22 04:08:28,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182373083] [2024-11-22 04:08:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:28,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:28,825 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 04:08:28,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182373083] [2024-11-22 04:08:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182373083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:28,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:28,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:08:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428080412] [2024-11-22 04:08:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:28,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:08:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:08:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:08:28,827 INFO L87 Difference]: Start difference. First operand 1239 states and 1694 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 04:08:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:29,324 INFO L93 Difference]: Finished difference Result 2968 states and 3967 transitions. [2024-11-22 04:08:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:08:29,325 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 04:08:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:29,334 INFO L225 Difference]: With dead ends: 2968 [2024-11-22 04:08:29,334 INFO L226 Difference]: Without dead ends: 2098 [2024-11-22 04:08:29,336 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 04:08:29,337 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 947 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:29,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 759 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 04:08:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2024-11-22 04:08:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2088. [2024-11-22 04:08:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1669 states have (on average 1.3343319352905931) internal successors, (2227), 1697 states have internal predecessors, (2227), 233 states have call successors, (233), 136 states have call predecessors, (233), 184 states have return successors, (338), 261 states have call predecessors, (338), 229 states have call successors, (338) [2024-11-22 04:08:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2798 transitions. [2024-11-22 04:08:29,428 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2798 transitions. Word has length 67 [2024-11-22 04:08:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:29,428 INFO L471 AbstractCegarLoop]: Abstraction has 2088 states and 2798 transitions. [2024-11-22 04:08:29,429 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 04:08:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2798 transitions. [2024-11-22 04:08:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 04:08:29,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:29,430 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 04:08:29,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 04:08:29,431 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:29,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash 763901709, now seen corresponding path program 1 times [2024-11-22 04:08:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:29,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094293463] [2024-11-22 04:08:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:29,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:29,458 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 04:08:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:29,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094293463] [2024-11-22 04:08:29,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094293463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:29,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:29,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:08:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194078116] [2024-11-22 04:08:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:29,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:08:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:08:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:08:29,461 INFO L87 Difference]: Start difference. First operand 2088 states and 2798 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 04:08:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:29,558 INFO L93 Difference]: Finished difference Result 3671 states and 4925 transitions. [2024-11-22 04:08:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:08:29,559 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 04:08:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:29,563 INFO L225 Difference]: With dead ends: 3671 [2024-11-22 04:08:29,563 INFO L226 Difference]: Without dead ends: 346 [2024-11-22 04:08:29,568 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 04:08:29,569 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 650 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 669 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 04:08:29,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 669 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-22 04:08:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-22 04:08:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 313 states have (on average 1.5559105431309903) internal successors, (487), 315 states have internal predecessors, (487), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-22 04:08:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 537 transitions. [2024-11-22 04:08:29,580 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 537 transitions. Word has length 68 [2024-11-22 04:08:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:29,580 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 537 transitions. [2024-11-22 04:08:29,580 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 04:08:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 537 transitions. [2024-11-22 04:08:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:29,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:29,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:29,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:08:29,582 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:29,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash -829304501, now seen corresponding path program 1 times [2024-11-22 04:08:29,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287579531] [2024-11-22 04:08:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:29,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:29,624 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 04:08:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287579531] [2024-11-22 04:08:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287579531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:08:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509876521] [2024-11-22 04:08:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:29,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:08:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:08:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:08:29,626 INFO L87 Difference]: Start difference. First operand 346 states and 537 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 04:08:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:29,638 INFO L93 Difference]: Finished difference Result 684 states and 1063 transitions. [2024-11-22 04:08:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:08:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:29,642 INFO L225 Difference]: With dead ends: 684 [2024-11-22 04:08:29,642 INFO L226 Difference]: Without dead ends: 346 [2024-11-22 04:08:29,643 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 04:08:29,643 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 529 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 536 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 04:08:29,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 536 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-22 04:08:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-22 04:08:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 313 states have (on average 1.5527156549520766) internal successors, (486), 315 states have internal predecessors, (486), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-22 04:08:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 536 transitions. [2024-11-22 04:08:29,655 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 536 transitions. Word has length 157 [2024-11-22 04:08:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:29,655 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 536 transitions. [2024-11-22 04:08:29,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 04:08:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 536 transitions. [2024-11-22 04:08:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:29,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:29,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:29,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:08:29,657 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:29,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash -564657011, now seen corresponding path program 1 times [2024-11-22 04:08:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311746813] [2024-11-22 04:08:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:29,701 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 04:08:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311746813] [2024-11-22 04:08:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311746813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:29,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:08:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930166891] [2024-11-22 04:08:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:29,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:08:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:08:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:08:29,703 INFO L87 Difference]: Start difference. First operand 346 states and 536 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 04:08:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:29,716 INFO L93 Difference]: Finished difference Result 676 states and 1046 transitions. [2024-11-22 04:08:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:08:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:29,719 INFO L225 Difference]: With dead ends: 676 [2024-11-22 04:08:29,720 INFO L226 Difference]: Without dead ends: 346 [2024-11-22 04:08:29,720 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 04:08:29,721 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 520 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 535 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 04:08:29,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 535 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:08:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-22 04:08:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-22 04:08:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 313 states have (on average 1.549520766773163) internal successors, (485), 315 states have internal predecessors, (485), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-22 04:08:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 535 transitions. [2024-11-22 04:08:29,732 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 535 transitions. Word has length 157 [2024-11-22 04:08:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:29,733 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 535 transitions. [2024-11-22 04:08:29,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 04:08:29,733 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 535 transitions. [2024-11-22 04:08:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:29,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:29,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:29,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 04:08:29,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:29,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash -975267377, now seen corresponding path program 1 times [2024-11-22 04:08:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:29,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237676094] [2024-11-22 04:08:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:29,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:29,821 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 04:08:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:29,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237676094] [2024-11-22 04:08:29,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237676094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:29,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:29,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:29,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076863009] [2024-11-22 04:08:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:29,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:29,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:29,824 INFO L87 Difference]: Start difference. First operand 346 states and 535 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 04:08:30,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:30,353 INFO L93 Difference]: Finished difference Result 1040 states and 1627 transitions. [2024-11-22 04:08:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:08:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:30,358 INFO L225 Difference]: With dead ends: 1040 [2024-11-22 04:08:30,358 INFO L226 Difference]: Without dead ends: 713 [2024-11-22 04:08:30,359 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 04:08:30,359 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 1005 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:30,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1491 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:08:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-22 04:08:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 686. [2024-11-22 04:08:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 627 states have (on average 1.5629984051036683) internal successors, (980), 630 states have internal predecessors, (980), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2024-11-22 04:08:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1069 transitions. [2024-11-22 04:08:30,388 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1069 transitions. Word has length 157 [2024-11-22 04:08:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:30,388 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1069 transitions. [2024-11-22 04:08:30,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 04:08:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1069 transitions. [2024-11-22 04:08:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:30,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:30,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:30,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:08:30,390 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:30,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -309232181, now seen corresponding path program 1 times [2024-11-22 04:08:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:30,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291600095] [2024-11-22 04:08:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:30,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:30,535 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 04:08:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291600095] [2024-11-22 04:08:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291600095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:30,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:30,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363692085] [2024-11-22 04:08:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:30,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:30,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:30,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:30,537 INFO L87 Difference]: Start difference. First operand 686 states and 1069 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:31,114 INFO L93 Difference]: Finished difference Result 1785 states and 2816 transitions. [2024-11-22 04:08:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:31,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:31,122 INFO L225 Difference]: With dead ends: 1785 [2024-11-22 04:08:31,122 INFO L226 Difference]: Without dead ends: 1118 [2024-11-22 04:08:31,124 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 04:08:31,124 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 1010 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:31,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2896 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:08:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-22 04:08:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1003. [2024-11-22 04:08:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 918 states have (on average 1.556644880174292) internal successors, (1429), 922 states have internal predecessors, (1429), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2024-11-22 04:08:31,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1559 transitions. [2024-11-22 04:08:31,159 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1559 transitions. Word has length 157 [2024-11-22 04:08:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:31,159 INFO L471 AbstractCegarLoop]: Abstraction has 1003 states and 1559 transitions. [2024-11-22 04:08:31,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1559 transitions. [2024-11-22 04:08:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:31,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:31,160 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:31,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:08:31,161 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:31,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1089721421, now seen corresponding path program 1 times [2024-11-22 04:08:31,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168932317] [2024-11-22 04:08:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:08:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:31,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168932317] [2024-11-22 04:08:31,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168932317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:31,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380527203] [2024-11-22 04:08:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:31,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:31,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:31,313 INFO L87 Difference]: Start difference. First operand 1003 states and 1559 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:31,886 INFO L93 Difference]: Finished difference Result 2794 states and 4401 transitions. [2024-11-22 04:08:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:31,894 INFO L225 Difference]: With dead ends: 2794 [2024-11-22 04:08:31,894 INFO L226 Difference]: Without dead ends: 1810 [2024-11-22 04:08:31,896 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 04:08:31,896 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 1005 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:31,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2880 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:08:31,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2024-11-22 04:08:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1678. [2024-11-22 04:08:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1539 states have (on average 1.5607537361923327) internal successors, (2402), 1547 states have internal predecessors, (2402), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2024-11-22 04:08:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2620 transitions. [2024-11-22 04:08:31,948 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2620 transitions. Word has length 157 [2024-11-22 04:08:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:31,948 INFO L471 AbstractCegarLoop]: Abstraction has 1678 states and 2620 transitions. [2024-11-22 04:08:31,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2620 transitions. [2024-11-22 04:08:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:31,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:31,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:31,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:08:31,950 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:31,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -527719029, now seen corresponding path program 1 times [2024-11-22 04:08:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124722582] [2024-11-22 04:08:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:32,047 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 04:08:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124722582] [2024-11-22 04:08:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124722582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:32,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:32,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148433677] [2024-11-22 04:08:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:32,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:32,048 INFO L87 Difference]: Start difference. First operand 1678 states and 2620 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:32,367 INFO L93 Difference]: Finished difference Result 3557 states and 5645 transitions. [2024-11-22 04:08:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:32,377 INFO L225 Difference]: With dead ends: 3557 [2024-11-22 04:08:32,377 INFO L226 Difference]: Without dead ends: 1898 [2024-11-22 04:08:32,380 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 04:08:32,380 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 716 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:32,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1073 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:08:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2024-11-22 04:08:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1678. [2024-11-22 04:08:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1539 states have (on average 1.557504873294347) internal successors, (2397), 1547 states have internal predecessors, (2397), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2024-11-22 04:08:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2615 transitions. [2024-11-22 04:08:32,459 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2615 transitions. Word has length 157 [2024-11-22 04:08:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:32,459 INFO L471 AbstractCegarLoop]: Abstraction has 1678 states and 2615 transitions. [2024-11-22 04:08:32,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2615 transitions. [2024-11-22 04:08:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:32,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:32,462 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:32,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 04:08:32,462 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:32,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -164252531, now seen corresponding path program 1 times [2024-11-22 04:08:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:32,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61164038] [2024-11-22 04:08:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:32,593 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 04:08:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61164038] [2024-11-22 04:08:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61164038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:32,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341357764] [2024-11-22 04:08:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:32,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:32,597 INFO L87 Difference]: Start difference. First operand 1678 states and 2615 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:32,902 INFO L93 Difference]: Finished difference Result 3546 states and 5613 transitions. [2024-11-22 04:08:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:32,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:32,910 INFO L225 Difference]: With dead ends: 3546 [2024-11-22 04:08:32,910 INFO L226 Difference]: Without dead ends: 1887 [2024-11-22 04:08:32,914 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 04:08:32,915 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 713 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:32,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1065 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:08:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2024-11-22 04:08:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1678. [2024-11-22 04:08:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1539 states have (on average 1.5542560103963612) internal successors, (2392), 1547 states have internal predecessors, (2392), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2024-11-22 04:08:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2610 transitions. [2024-11-22 04:08:33,004 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2610 transitions. Word has length 157 [2024-11-22 04:08:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:33,004 INFO L471 AbstractCegarLoop]: Abstraction has 1678 states and 2610 transitions. [2024-11-22 04:08:33,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2610 transitions. [2024-11-22 04:08:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:33,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:33,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:33,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:08:33,006 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:33,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash 124566859, now seen corresponding path program 1 times [2024-11-22 04:08:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:33,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99792734] [2024-11-22 04:08:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:33,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:33,126 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 04:08:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99792734] [2024-11-22 04:08:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99792734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:33,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:33,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571288598] [2024-11-22 04:08:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:33,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:33,128 INFO L87 Difference]: Start difference. First operand 1678 states and 2610 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:33,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:33,840 INFO L93 Difference]: Finished difference Result 4939 states and 7798 transitions. [2024-11-22 04:08:33,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:33,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:33,854 INFO L225 Difference]: With dead ends: 4939 [2024-11-22 04:08:33,855 INFO L226 Difference]: Without dead ends: 3280 [2024-11-22 04:08:33,859 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 04:08:33,860 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 984 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:33,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2830 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:08:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2024-11-22 04:08:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3127. [2024-11-22 04:08:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 2874 states have (on average 1.568545581071677) internal successors, (4508), 2896 states have internal predecessors, (4508), 178 states have call successors, (178), 55 states have call predecessors, (178), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2024-11-22 04:08:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4926 transitions. [2024-11-22 04:08:34,012 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4926 transitions. Word has length 157 [2024-11-22 04:08:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:34,013 INFO L471 AbstractCegarLoop]: Abstraction has 3127 states and 4926 transitions. [2024-11-22 04:08:34,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4926 transitions. [2024-11-22 04:08:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:34,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:34,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:34,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:08:34,015 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:34,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash -420305715, now seen corresponding path program 1 times [2024-11-22 04:08:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:34,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714244498] [2024-11-22 04:08:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:34,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:34,127 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 04:08:34,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:34,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714244498] [2024-11-22 04:08:34,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714244498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:34,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197896546] [2024-11-22 04:08:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:34,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:34,129 INFO L87 Difference]: Start difference. First operand 3127 states and 4926 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:34,820 INFO L93 Difference]: Finished difference Result 9606 states and 15424 transitions. [2024-11-22 04:08:34,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:34,847 INFO L225 Difference]: With dead ends: 9606 [2024-11-22 04:08:34,847 INFO L226 Difference]: Without dead ends: 6498 [2024-11-22 04:08:34,856 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 04:08:34,856 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 1009 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:34,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1961 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:08:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2024-11-22 04:08:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6295. [2024-11-22 04:08:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 5796 states have (on average 1.5910973084886129) internal successors, (9222), 5864 states have internal predecessors, (9222), 330 states have call successors, (330), 103 states have call predecessors, (330), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2024-11-22 04:08:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 10136 transitions. [2024-11-22 04:08:35,129 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 10136 transitions. Word has length 157 [2024-11-22 04:08:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:35,130 INFO L471 AbstractCegarLoop]: Abstraction has 6295 states and 10136 transitions. [2024-11-22 04:08:35,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 10136 transitions. [2024-11-22 04:08:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:35,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:35,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:35,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 04:08:35,135 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:35,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1368357681, now seen corresponding path program 1 times [2024-11-22 04:08:35,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:35,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255872463] [2024-11-22 04:08:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:35,224 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 04:08:35,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:35,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255872463] [2024-11-22 04:08:35,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255872463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:35,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:35,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:35,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235225153] [2024-11-22 04:08:35,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:35,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:35,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:35,227 INFO L87 Difference]: Start difference. First operand 6295 states and 10136 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:35,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:35,737 INFO L93 Difference]: Finished difference Result 13816 states and 22775 transitions. [2024-11-22 04:08:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:35,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:35,778 INFO L225 Difference]: With dead ends: 13816 [2024-11-22 04:08:35,778 INFO L226 Difference]: Without dead ends: 7540 [2024-11-22 04:08:35,795 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 04:08:35,795 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 707 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:35,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1039 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:08:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7540 states. [2024-11-22 04:08:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7540 to 6295. [2024-11-22 04:08:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 5796 states have (on average 1.5881642512077294) internal successors, (9205), 5864 states have internal predecessors, (9205), 330 states have call successors, (330), 103 states have call predecessors, (330), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2024-11-22 04:08:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 10119 transitions. [2024-11-22 04:08:36,191 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 10119 transitions. Word has length 157 [2024-11-22 04:08:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:36,192 INFO L471 AbstractCegarLoop]: Abstraction has 6295 states and 10119 transitions. [2024-11-22 04:08:36,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:36,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 10119 transitions. [2024-11-22 04:08:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:36,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:36,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:36,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:08:36,198 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:36,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1953129331, now seen corresponding path program 1 times [2024-11-22 04:08:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237071645] [2024-11-22 04:08:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:36,344 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 04:08:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237071645] [2024-11-22 04:08:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237071645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33653285] [2024-11-22 04:08:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:36,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:36,346 INFO L87 Difference]: Start difference. First operand 6295 states and 10119 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:37,527 INFO L93 Difference]: Finished difference Result 19902 states and 32801 transitions. [2024-11-22 04:08:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:37,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:37,571 INFO L225 Difference]: With dead ends: 19902 [2024-11-22 04:08:37,571 INFO L226 Difference]: Without dead ends: 13626 [2024-11-22 04:08:37,591 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 04:08:37,593 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 963 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:37,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 2773 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:08:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13626 states. [2024-11-22 04:08:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13626 to 13333. [2024-11-22 04:08:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13333 states, 12288 states have (on average 1.615478515625) internal successors, (19851), 12502 states have internal predecessors, (19851), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2024-11-22 04:08:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13333 states to 13333 states and 22141 transitions. [2024-11-22 04:08:38,269 INFO L78 Accepts]: Start accepts. Automaton has 13333 states and 22141 transitions. Word has length 157 [2024-11-22 04:08:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:38,269 INFO L471 AbstractCegarLoop]: Abstraction has 13333 states and 22141 transitions. [2024-11-22 04:08:38,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13333 states and 22141 transitions. [2024-11-22 04:08:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:38,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:38,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:38,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:08:38,277 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:38,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1907332367, now seen corresponding path program 1 times [2024-11-22 04:08:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11705714] [2024-11-22 04:08:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:38,379 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 04:08:38,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11705714] [2024-11-22 04:08:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11705714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:38,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734078680] [2024-11-22 04:08:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:38,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:38,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:38,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:38,382 INFO L87 Difference]: Start difference. First operand 13333 states and 22141 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:39,443 INFO L93 Difference]: Finished difference Result 29832 states and 50979 transitions. [2024-11-22 04:08:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:39,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:39,506 INFO L225 Difference]: With dead ends: 29832 [2024-11-22 04:08:39,506 INFO L226 Difference]: Without dead ends: 16518 [2024-11-22 04:08:39,545 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 04:08:39,545 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 703 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:39,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1025 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 04:08:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16518 states. [2024-11-22 04:08:40,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16518 to 13333. [2024-11-22 04:08:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13333 states, 12288 states have (on average 1.61279296875) internal successors, (19818), 12502 states have internal predecessors, (19818), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2024-11-22 04:08:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13333 states to 13333 states and 22108 transitions. [2024-11-22 04:08:40,313 INFO L78 Accepts]: Start accepts. Automaton has 13333 states and 22108 transitions. Word has length 157 [2024-11-22 04:08:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:40,314 INFO L471 AbstractCegarLoop]: Abstraction has 13333 states and 22108 transitions. [2024-11-22 04:08:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 13333 states and 22108 transitions. [2024-11-22 04:08:40,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:40,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:40,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:40,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:08:40,321 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:40,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:40,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1477674061, now seen corresponding path program 1 times [2024-11-22 04:08:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858534662] [2024-11-22 04:08:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:40,510 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 04:08:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858534662] [2024-11-22 04:08:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858534662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:40,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:40,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:08:40,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016428008] [2024-11-22 04:08:40,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:40,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:08:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:08:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:08:40,513 INFO L87 Difference]: Start difference. First operand 13333 states and 22108 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:41,359 INFO L93 Difference]: Finished difference Result 29587 states and 50423 transitions. [2024-11-22 04:08:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:08:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:41,417 INFO L225 Difference]: With dead ends: 29587 [2024-11-22 04:08:41,418 INFO L226 Difference]: Without dead ends: 16273 [2024-11-22 04:08:41,450 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 04:08:41,451 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 698 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:41,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1015 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:08:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16273 states. [2024-11-22 04:08:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16273 to 13333. [2024-11-22 04:08:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13333 states, 12288 states have (on average 1.610107421875) internal successors, (19785), 12502 states have internal predecessors, (19785), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2024-11-22 04:08:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13333 states to 13333 states and 22075 transitions. [2024-11-22 04:08:42,102 INFO L78 Accepts]: Start accepts. Automaton has 13333 states and 22075 transitions. Word has length 157 [2024-11-22 04:08:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:42,103 INFO L471 AbstractCegarLoop]: Abstraction has 13333 states and 22075 transitions. [2024-11-22 04:08:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13333 states and 22075 transitions. [2024-11-22 04:08:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:42,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:42,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:42,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 04:08:42,109 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:42,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:42,109 INFO L85 PathProgramCache]: Analyzing trace with hash 771077455, now seen corresponding path program 1 times [2024-11-22 04:08:42,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:42,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311014807] [2024-11-22 04:08:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:42,215 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 04:08:42,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:42,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311014807] [2024-11-22 04:08:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311014807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206673939] [2024-11-22 04:08:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:42,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:42,217 INFO L87 Difference]: Start difference. First operand 13333 states and 22075 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:44,757 INFO L93 Difference]: Finished difference Result 44818 states and 76348 transitions. [2024-11-22 04:08:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:44,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:44,976 INFO L225 Difference]: With dead ends: 44818 [2024-11-22 04:08:44,976 INFO L226 Difference]: Without dead ends: 31504 [2024-11-22 04:08:45,052 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 04:08:45,053 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 1225 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:45,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 2706 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:08:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31504 states. [2024-11-22 04:08:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31504 to 28532. [2024-11-22 04:08:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28532 states, 26265 states have (on average 1.635217970683419) internal successors, (42949), 26933 states have internal predecessors, (42949), 1210 states have call successors, (1210), 391 states have call predecessors, (1210), 1056 states have return successors, (5304), 1271 states have call predecessors, (5304), 1208 states have call successors, (5304) [2024-11-22 04:08:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28532 states to 28532 states and 49463 transitions. [2024-11-22 04:08:46,930 INFO L78 Accepts]: Start accepts. Automaton has 28532 states and 49463 transitions. Word has length 157 [2024-11-22 04:08:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:46,930 INFO L471 AbstractCegarLoop]: Abstraction has 28532 states and 49463 transitions. [2024-11-22 04:08:46,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28532 states and 49463 transitions. [2024-11-22 04:08:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:46,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:46,942 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:46,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 04:08:46,942 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:46,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1718115341, now seen corresponding path program 1 times [2024-11-22 04:08:46,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:46,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823524629] [2024-11-22 04:08:46,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:46,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:47,304 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 04:08:47,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823524629] [2024-11-22 04:08:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823524629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337049161] [2024-11-22 04:08:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:47,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:47,306 INFO L87 Difference]: Start difference. First operand 28532 states and 49463 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:08:51,342 INFO L93 Difference]: Finished difference Result 97077 states and 175690 transitions. [2024-11-22 04:08:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:08:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:08:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:08:51,950 INFO L225 Difference]: With dead ends: 97077 [2024-11-22 04:08:51,950 INFO L226 Difference]: Without dead ends: 68564 [2024-11-22 04:08:52,123 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 04:08:52,126 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 1020 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:08:52,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 2698 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:08:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68564 states. [2024-11-22 04:08:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68564 to 63771. [2024-11-22 04:08:56,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63771 states, 58606 states have (on average 1.6642152680612907) internal successors, (97533), 60668 states have internal predecessors, (97533), 2330 states have call successors, (2330), 775 states have call predecessors, (2330), 2834 states have return successors, (18712), 2455 states have call predecessors, (18712), 2328 states have call successors, (18712) [2024-11-22 04:08:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63771 states to 63771 states and 118575 transitions. [2024-11-22 04:08:57,137 INFO L78 Accepts]: Start accepts. Automaton has 63771 states and 118575 transitions. Word has length 157 [2024-11-22 04:08:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:08:57,137 INFO L471 AbstractCegarLoop]: Abstraction has 63771 states and 118575 transitions. [2024-11-22 04:08:57,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:08:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 63771 states and 118575 transitions. [2024-11-22 04:08:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:08:57,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:08:57,156 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:08:57,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 04:08:57,157 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:08:57,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:08:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1715018353, now seen corresponding path program 1 times [2024-11-22 04:08:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:08:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072311184] [2024-11-22 04:08:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:08:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:08:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:08:57,251 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 04:08:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:08:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072311184] [2024-11-22 04:08:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072311184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:08:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:08:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:08:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650969718] [2024-11-22 04:08:57,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:08:57,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:08:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:08:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:08:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:08:57,254 INFO L87 Difference]: Start difference. First operand 63771 states and 118575 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 04:09:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:09:05,403 INFO L93 Difference]: Finished difference Result 215490 states and 427756 transitions. [2024-11-22 04:09:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:09:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 157 [2024-11-22 04:09:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:09:06,126 INFO L225 Difference]: With dead ends: 215490 [2024-11-22 04:09:06,127 INFO L226 Difference]: Without dead ends: 151738 [2024-11-22 04:09:06,773 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 04:09:06,776 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1165 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:09:06,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1877 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:09:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151738 states.