./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:19:03,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:19:03,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:19:03,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:19:03,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:19:03,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:19:03,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:19:03,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:19:03,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:19:03,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:19:03,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:19:03,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:19:03,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:19:03,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:19:03,859 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:19:03,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:19:03,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:19:03,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:19:03,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:19:03,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:19:03,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:19:03,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:19:03,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:19:03,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:19:03,868 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:19:03,868 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:19:03,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:19:03,869 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:19:03,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:19:03,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:19:03,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:19:03,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:19:03,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:19:03,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:19:03,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:19:03,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:19:03,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:19:03,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:19:03,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:19:03,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:19:03,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:19:03,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:19:03,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2024-11-18 16:19:04,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:19:04,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:19:04,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:19:04,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:19:04,169 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:19:04,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-18 16:19:06,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:19:06,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:19:06,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-18 16:19:06,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e31335/efdf11ce6b354bb5b2e1df238f6a0e46/FLAGf94f4adc5 [2024-11-18 16:19:07,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e31335/efdf11ce6b354bb5b2e1df238f6a0e46 [2024-11-18 16:19:07,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:19:07,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:19:07,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:19:07,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:19:07,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:19:07,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb1a094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07, skipping insertion in model container [2024-11-18 16:19:07,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:19:07,477 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-18 16:19:07,566 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-18 16:19:07,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:19:07,772 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:19:07,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-11-18 16:19:07,812 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-11-18 16:19:07,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:19:07,889 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:19:07,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07 WrapperNode [2024-11-18 16:19:07,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:19:07,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:19:07,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:19:07,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:19:07,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,957 INFO L138 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 774 [2024-11-18 16:19:07,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:19:07,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:19:07,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:19:07,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:19:07,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:07,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,030 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]. [2024-11-18 16:19:08,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,057 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:19:08,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:19:08,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:19:08,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:19:08,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (1/1) ... [2024-11-18 16:19:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:19:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:08,114 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) [2024-11-18 16:19:08,118 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 [2024-11-18 16:19:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:19:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:19:08,188 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:19:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:19:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:19:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:19:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:19:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:19:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:19:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:19:08,190 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:19:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:19:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:19:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:19:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:19:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:19:08,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:19:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:19:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:19:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:19:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:19:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:19:08,193 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:19:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:19:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:19:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:19:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:19:08,197 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:19:08,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:19:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:19:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:19:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:19:08,198 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:19:08,198 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:19:08,327 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:19:08,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:19:09,158 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-18 16:19:09,158 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:19:09,175 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:19:09,176 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-18 16:19:09,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:19:09 BoogieIcfgContainer [2024-11-18 16:19:09,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:19:09,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:19:09,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:19:09,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:19:09,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:19:07" (1/3) ... [2024-11-18 16:19:09,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40405e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:19:09, skipping insertion in model container [2024-11-18 16:19:09,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:19:07" (2/3) ... [2024-11-18 16:19:09,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40405e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:19:09, skipping insertion in model container [2024-11-18 16:19:09,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:19:09" (3/3) ... [2024-11-18 16:19:09,188 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-11-18 16:19:09,209 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:19:09,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:19:09,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:19:09,301 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;@6019304f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:19:09,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:19:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 319 states have (on average 1.6050156739811912) internal successors, (512), 327 states have internal predecessors, (512), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-18 16:19:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:09,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:09,320 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] [2024-11-18 16:19:09,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:09,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1154220689, now seen corresponding path program 1 times [2024-11-18 16:19:09,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:09,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829273736] [2024-11-18 16:19:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829273736] [2024-11-18 16:19:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829273736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:09,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934160391] [2024-11-18 16:19:09,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:09,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:09,996 INFO L87 Difference]: Start difference. First operand has 374 states, 319 states have (on average 1.6050156739811912) internal successors, (512), 327 states have internal predecessors, (512), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:10,289 INFO L93 Difference]: Finished difference Result 725 states and 1135 transitions. [2024-11-18 16:19:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:19:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:10,328 INFO L225 Difference]: With dead ends: 725 [2024-11-18 16:19:10,328 INFO L226 Difference]: Without dead ends: 363 [2024-11-18 16:19:10,344 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 [2024-11-18 16:19:10,353 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 131 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 963 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 [2024-11-18 16:19:10,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 963 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-18 16:19:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-18 16:19:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 311 states have (on average 1.5144694533762058) internal successors, (471), 316 states have internal predecessors, (471), 37 states have call successors, (37), 15 states have call predecessors, (37), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-18 16:19:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 541 transitions. [2024-11-18 16:19:10,438 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 541 transitions. Word has length 65 [2024-11-18 16:19:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:10,439 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 541 transitions. [2024-11-18 16:19:10,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 541 transitions. [2024-11-18 16:19:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:10,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:10,447 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] [2024-11-18 16:19:10,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:19:10,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1194895439, now seen corresponding path program 1 times [2024-11-18 16:19:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:10,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097419615] [2024-11-18 16:19:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:10,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097419615] [2024-11-18 16:19:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097419615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723840606] [2024-11-18 16:19:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:10,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:10,895 INFO L87 Difference]: Start difference. First operand 363 states and 541 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:12,477 INFO L93 Difference]: Finished difference Result 554 states and 809 transitions. [2024-11-18 16:19:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:12,486 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 [2024-11-18 16:19:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:12,497 INFO L225 Difference]: With dead ends: 554 [2024-11-18 16:19:12,497 INFO L226 Difference]: Without dead ends: 466 [2024-11-18 16:19:12,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:12,499 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 375 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:12,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1177 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 16:19:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-18 16:19:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 459. [2024-11-18 16:19:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 387 states have (on average 1.4857881136950903) internal successors, (575), 394 states have internal predecessors, (575), 48 states have call successors, (48), 22 states have call predecessors, (48), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-11-18 16:19:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 672 transitions. [2024-11-18 16:19:12,577 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 672 transitions. Word has length 65 [2024-11-18 16:19:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:12,577 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 672 transitions. [2024-11-18 16:19:12,578 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) [2024-11-18 16:19:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 672 transitions. [2024-11-18 16:19:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:12,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:12,583 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] [2024-11-18 16:19:12,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:19:12,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:12,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:12,584 INFO L85 PathProgramCache]: Analyzing trace with hash 483993201, now seen corresponding path program 1 times [2024-11-18 16:19:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363760200] [2024-11-18 16:19:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363760200] [2024-11-18 16:19:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363760200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:12,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:12,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:12,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936892122] [2024-11-18 16:19:12,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:12,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:12,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:12,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:12,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:12,976 INFO L87 Difference]: Start difference. First operand 459 states and 672 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) [2024-11-18 16:19:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:14,846 INFO L93 Difference]: Finished difference Result 776 states and 1102 transitions. [2024-11-18 16:19:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:14,850 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 [2024-11-18 16:19:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:14,874 INFO L225 Difference]: With dead ends: 776 [2024-11-18 16:19:14,874 INFO L226 Difference]: Without dead ends: 599 [2024-11-18 16:19:14,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:19:14,882 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 780 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:14,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 1408 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 16:19:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-18 16:19:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 555. [2024-11-18 16:19:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 463 states have (on average 1.4643628509719222) internal successors, (678), 472 states have internal predecessors, (678), 59 states have call successors, (59), 29 states have call predecessors, (59), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2024-11-18 16:19:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 805 transitions. [2024-11-18 16:19:15,053 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 805 transitions. Word has length 65 [2024-11-18 16:19:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:15,053 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 805 transitions. [2024-11-18 16:19:15,054 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) [2024-11-18 16:19:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 805 transitions. [2024-11-18 16:19:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:15,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:15,083 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] [2024-11-18 16:19:15,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:19:15,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:15,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1544592909, now seen corresponding path program 1 times [2024-11-18 16:19:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558888991] [2024-11-18 16:19:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:15,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:15,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558888991] [2024-11-18 16:19:15,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558888991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:15,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:15,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:15,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151617990] [2024-11-18 16:19:15,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:15,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:15,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:15,327 INFO L87 Difference]: Start difference. First operand 555 states and 805 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:15,439 INFO L93 Difference]: Finished difference Result 827 states and 1178 transitions. [2024-11-18 16:19:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-18 16:19:15,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:15,461 INFO L225 Difference]: With dead ends: 827 [2024-11-18 16:19:15,461 INFO L226 Difference]: Without dead ends: 560 [2024-11-18 16:19:15,463 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 [2024-11-18 16:19:15,467 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 0 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2685 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 [2024-11-18 16:19:15,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2685 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-18 16:19:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2024-11-18 16:19:15,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 467 states have (on average 1.45610278372591) internal successors, (680), 476 states have internal predecessors, (680), 59 states have call successors, (59), 29 states have call predecessors, (59), 32 states have return successors, (69), 58 states have call predecessors, (69), 55 states have call successors, (69) [2024-11-18 16:19:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 808 transitions. [2024-11-18 16:19:15,570 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 808 transitions. Word has length 65 [2024-11-18 16:19:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:15,570 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 808 transitions. [2024-11-18 16:19:15,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 808 transitions. [2024-11-18 16:19:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:15,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:15,572 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] [2024-11-18 16:19:15,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:19:15,572 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:15,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1721015089, now seen corresponding path program 1 times [2024-11-18 16:19:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:15,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235036787] [2024-11-18 16:19:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:15,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235036787] [2024-11-18 16:19:15,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235036787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:15,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:15,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:15,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756479670] [2024-11-18 16:19:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:15,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:15,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:15,815 INFO L87 Difference]: Start difference. First operand 560 states and 808 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-18 16:19:18,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:18,250 INFO L93 Difference]: Finished difference Result 2579 states and 3585 transitions. [2024-11-18 16:19:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:18,273 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), 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 65 [2024-11-18 16:19:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:18,321 INFO L225 Difference]: With dead ends: 2579 [2024-11-18 16:19:18,325 INFO L226 Difference]: Without dead ends: 2307 [2024-11-18 16:19:18,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:19:18,335 INFO L432 NwaCegarLoop]: 750 mSDtfsCounter, 1643 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:18,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 2200 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 16:19:18,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2024-11-18 16:19:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2150. [2024-11-18 16:19:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1718 states have (on average 1.3533178114086146) internal successors, (2325), 1755 states have internal predecessors, (2325), 224 states have call successors, (224), 173 states have call predecessors, (224), 206 states have return successors, (338), 225 states have call predecessors, (338), 220 states have call successors, (338) [2024-11-18 16:19:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2887 transitions. [2024-11-18 16:19:18,814 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2887 transitions. Word has length 65 [2024-11-18 16:19:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:18,815 INFO L471 AbstractCegarLoop]: Abstraction has 2150 states and 2887 transitions. [2024-11-18 16:19:18,815 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), 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) [2024-11-18 16:19:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2887 transitions. [2024-11-18 16:19:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:18,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:18,816 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] [2024-11-18 16:19:18,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:19:18,816 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:18,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1314224519, now seen corresponding path program 1 times [2024-11-18 16:19:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019970395] [2024-11-18 16:19:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:18,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:19,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:19,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019970395] [2024-11-18 16:19:19,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019970395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:19,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:19,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356049238] [2024-11-18 16:19:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:19,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:19,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:19,589 INFO L87 Difference]: Start difference. First operand 2150 states and 2887 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) [2024-11-18 16:19:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:21,694 INFO L93 Difference]: Finished difference Result 3885 states and 5134 transitions. [2024-11-18 16:19:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 16:19:21,694 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 [2024-11-18 16:19:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:21,705 INFO L225 Difference]: With dead ends: 3885 [2024-11-18 16:19:21,706 INFO L226 Difference]: Without dead ends: 2377 [2024-11-18 16:19:21,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:19:21,713 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 789 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:21,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1198 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 16:19:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2024-11-18 16:19:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2163. [2024-11-18 16:19:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 1732 states have (on average 1.3475750577367205) internal successors, (2334), 1765 states have internal predecessors, (2334), 225 states have call successors, (225), 174 states have call predecessors, (225), 204 states have return successors, (327), 227 states have call predecessors, (327), 221 states have call successors, (327) [2024-11-18 16:19:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2886 transitions. [2024-11-18 16:19:21,925 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2886 transitions. Word has length 65 [2024-11-18 16:19:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:21,930 INFO L471 AbstractCegarLoop]: Abstraction has 2163 states and 2886 transitions. [2024-11-18 16:19:21,930 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) [2024-11-18 16:19:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2886 transitions. [2024-11-18 16:19:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:19:21,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:21,932 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] [2024-11-18 16:19:21,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:19:21,932 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:21,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1180211013, now seen corresponding path program 1 times [2024-11-18 16:19:21,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:21,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478297256] [2024-11-18 16:19:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:21,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:22,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:22,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478297256] [2024-11-18 16:19:22,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478297256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:22,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:22,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:19:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570230673] [2024-11-18 16:19:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:22,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:22,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:22,100 INFO L87 Difference]: Start difference. First operand 2163 states and 2886 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:23,144 INFO L93 Difference]: Finished difference Result 5600 states and 7422 transitions. [2024-11-18 16:19:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:19:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:19:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:23,160 INFO L225 Difference]: With dead ends: 5600 [2024-11-18 16:19:23,161 INFO L226 Difference]: Without dead ends: 3728 [2024-11-18 16:19:23,164 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 [2024-11-18 16:19:23,165 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 741 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:23,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 603 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:19:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2024-11-18 16:19:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3724. [2024-11-18 16:19:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3724 states, 2945 states have (on average 1.3076400679117148) internal successors, (3851), 3006 states have internal predecessors, (3851), 394 states have call successors, (394), 319 states have call predecessors, (394), 383 states have return successors, (643), 402 states have call predecessors, (643), 390 states have call successors, (643) [2024-11-18 16:19:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 4888 transitions. [2024-11-18 16:19:23,579 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 4888 transitions. Word has length 65 [2024-11-18 16:19:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:23,579 INFO L471 AbstractCegarLoop]: Abstraction has 3724 states and 4888 transitions. [2024-11-18 16:19:23,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:19:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 4888 transitions. [2024-11-18 16:19:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:19:23,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:23,595 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] [2024-11-18 16:19:23,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:19:23,595 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1385300724, now seen corresponding path program 1 times [2024-11-18 16:19:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541824942] [2024-11-18 16:19:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:23,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:23,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541824942] [2024-11-18 16:19:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541824942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:23,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965306630] [2024-11-18 16:19:23,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:23,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:23,664 INFO L87 Difference]: Start difference. First operand 3724 states and 4888 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:24,589 INFO L93 Difference]: Finished difference Result 9521 states and 12531 transitions. [2024-11-18 16:19:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-18 16:19:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:24,706 INFO L225 Difference]: With dead ends: 9521 [2024-11-18 16:19:24,710 INFO L226 Difference]: Without dead ends: 6067 [2024-11-18 16:19:24,742 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 [2024-11-18 16:19:24,747 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 102 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:24,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1063 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:19:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2024-11-18 16:19:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 5931. [2024-11-18 16:19:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5931 states, 4628 states have (on average 1.2955920484010373) internal successors, (5996), 4711 states have internal predecessors, (5996), 658 states have call successors, (658), 551 states have call predecessors, (658), 643 states have return successors, (1071), 672 states have call predecessors, (1071), 654 states have call successors, (1071) [2024-11-18 16:19:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 7725 transitions. [2024-11-18 16:19:25,529 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 7725 transitions. Word has length 66 [2024-11-18 16:19:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:25,529 INFO L471 AbstractCegarLoop]: Abstraction has 5931 states and 7725 transitions. [2024-11-18 16:19:25,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 7725 transitions. [2024-11-18 16:19:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:19:25,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:25,536 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:25,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:19:25,537 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:25,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1900419470, now seen corresponding path program 1 times [2024-11-18 16:19:25,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:25,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816135376] [2024-11-18 16:19:25,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:19:25,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:25,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816135376] [2024-11-18 16:19:25,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816135376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:25,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:25,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656145902] [2024-11-18 16:19:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:25,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:25,685 INFO L87 Difference]: Start difference. First operand 5931 states and 7725 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:26,235 INFO L93 Difference]: Finished difference Result 7623 states and 9859 transitions. [2024-11-18 16:19:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-18 16:19:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:26,355 INFO L225 Difference]: With dead ends: 7623 [2024-11-18 16:19:26,355 INFO L226 Difference]: Without dead ends: 4998 [2024-11-18 16:19:26,382 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 [2024-11-18 16:19:26,391 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 505 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:26,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 645 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:19:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2024-11-18 16:19:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4908. [2024-11-18 16:19:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 3829 states have (on average 1.2726560459650038) internal successors, (4873), 3890 states have internal predecessors, (4873), 558 states have call successors, (558), 467 states have call predecessors, (558), 519 states have return successors, (800), 554 states have call predecessors, (800), 554 states have call successors, (800) [2024-11-18 16:19:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 6231 transitions. [2024-11-18 16:19:27,269 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 6231 transitions. Word has length 73 [2024-11-18 16:19:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:27,274 INFO L471 AbstractCegarLoop]: Abstraction has 4908 states and 6231 transitions. [2024-11-18 16:19:27,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:19:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 6231 transitions. [2024-11-18 16:19:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:19:27,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:27,276 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:27,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:19:27,276 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:27,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 442179811, now seen corresponding path program 1 times [2024-11-18 16:19:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964690137] [2024-11-18 16:19:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:27,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964690137] [2024-11-18 16:19:27,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964690137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:27,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:19:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028445065] [2024-11-18 16:19:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:27,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:19:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:19:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:19:27,587 INFO L87 Difference]: Start difference. First operand 4908 states and 6231 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:28,398 INFO L93 Difference]: Finished difference Result 6017 states and 7602 transitions. [2024-11-18 16:19:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:28,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-18 16:19:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:28,429 INFO L225 Difference]: With dead ends: 6017 [2024-11-18 16:19:28,433 INFO L226 Difference]: Without dead ends: 6014 [2024-11-18 16:19:28,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:28,437 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1000 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:28,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 641 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:19:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2024-11-18 16:19:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5912. [2024-11-18 16:19:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5912 states, 4592 states have (on average 1.2641550522648084) internal successors, (5805), 4663 states have internal predecessors, (5805), 684 states have call successors, (684), 581 states have call predecessors, (684), 634 states have return successors, (982), 671 states have call predecessors, (982), 681 states have call successors, (982) [2024-11-18 16:19:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 7471 transitions. [2024-11-18 16:19:29,110 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 7471 transitions. Word has length 73 [2024-11-18 16:19:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:29,111 INFO L471 AbstractCegarLoop]: Abstraction has 5912 states and 7471 transitions. [2024-11-18 16:19:29,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 7471 transitions. [2024-11-18 16:19:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:19:29,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:29,117 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:29,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:19:29,118 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:29,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 821569909, now seen corresponding path program 1 times [2024-11-18 16:19:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:29,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967409330] [2024-11-18 16:19:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:29,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:29,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967409330] [2024-11-18 16:19:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967409330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:19:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609412868] [2024-11-18 16:19:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:29,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:19:29,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:19:29,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:19:29,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:19:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:29,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:19:29,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:19:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:29,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:19:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:30,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609412868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:19:30,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:19:30,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:19:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017612626] [2024-11-18 16:19:30,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:19:30,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:19:30,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:19:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:30,005 INFO L87 Difference]: Start difference. First operand 5912 states and 7471 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:19:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:31,159 INFO L93 Difference]: Finished difference Result 12527 states and 15692 transitions. [2024-11-18 16:19:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:19:31,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-18 16:19:31,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:31,210 INFO L225 Difference]: With dead ends: 12527 [2024-11-18 16:19:31,210 INFO L226 Difference]: Without dead ends: 12524 [2024-11-18 16:19:31,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:31,218 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 1384 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:31,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1995 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:19:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12524 states. [2024-11-18 16:19:32,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12524 to 11222. [2024-11-18 16:19:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11222 states, 8697 states have (on average 1.256295274232494) internal successors, (10926), 8834 states have internal predecessors, (10926), 1292 states have call successors, (1292), 1110 states have call predecessors, (1292), 1231 states have return successors, (1868), 1281 states have call predecessors, (1868), 1289 states have call successors, (1868) [2024-11-18 16:19:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11222 states to 11222 states and 14086 transitions. [2024-11-18 16:19:32,103 INFO L78 Accepts]: Start accepts. Automaton has 11222 states and 14086 transitions. Word has length 74 [2024-11-18 16:19:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:32,104 INFO L471 AbstractCegarLoop]: Abstraction has 11222 states and 14086 transitions. [2024-11-18 16:19:32,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:19:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 11222 states and 14086 transitions. [2024-11-18 16:19:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:19:32,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:32,106 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:32,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:19:32,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 16:19:32,308 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:32,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1372581859, now seen corresponding path program 2 times [2024-11-18 16:19:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:32,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572149736] [2024-11-18 16:19:32,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:19:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:32,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:19:32,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:19:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:32,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572149736] [2024-11-18 16:19:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572149736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370824715] [2024-11-18 16:19:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:32,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:32,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:32,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:32,336 INFO L87 Difference]: Start difference. First operand 11222 states and 14086 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:32,950 INFO L93 Difference]: Finished difference Result 16284 states and 20466 transitions. [2024-11-18 16:19:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:32,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-18 16:19:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:32,985 INFO L225 Difference]: With dead ends: 16284 [2024-11-18 16:19:32,985 INFO L226 Difference]: Without dead ends: 5787 [2024-11-18 16:19:33,004 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 [2024-11-18 16:19:33,004 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 509 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:33,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 729 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2024-11-18 16:19:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 4782. [2024-11-18 16:19:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 3757 states have (on average 1.2387543252595157) internal successors, (4654), 3810 states have internal predecessors, (4654), 532 states have call successors, (532), 445 states have call predecessors, (532), 491 states have return successors, (717), 530 states have call predecessors, (717), 529 states have call successors, (717) [2024-11-18 16:19:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 5903 transitions. [2024-11-18 16:19:33,262 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 5903 transitions. Word has length 77 [2024-11-18 16:19:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:33,262 INFO L471 AbstractCegarLoop]: Abstraction has 4782 states and 5903 transitions. [2024-11-18 16:19:33,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:19:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 5903 transitions. [2024-11-18 16:19:33,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:19:33,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:33,264 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:33,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:19:33,264 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:33,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -365873625, now seen corresponding path program 1 times [2024-11-18 16:19:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:33,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310577706] [2024-11-18 16:19:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:33,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:19:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310577706] [2024-11-18 16:19:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310577706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:33,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:33,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608565208] [2024-11-18 16:19:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:33,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:33,345 INFO L87 Difference]: Start difference. First operand 4782 states and 5903 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:35,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:35,266 INFO L93 Difference]: Finished difference Result 13678 states and 16854 transitions. [2024-11-18 16:19:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:19:35,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-18 16:19:35,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:35,301 INFO L225 Difference]: With dead ends: 13678 [2024-11-18 16:19:35,301 INFO L226 Difference]: Without dead ends: 9180 [2024-11-18 16:19:35,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 16:19:35,315 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 669 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:35,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1603 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:19:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9180 states. [2024-11-18 16:19:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9180 to 8239. [2024-11-18 16:19:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8239 states, 6392 states have (on average 1.2082290362953692) internal successors, (7723), 6492 states have internal predecessors, (7723), 951 states have call successors, (951), 804 states have call predecessors, (951), 894 states have return successors, (1389), 949 states have call predecessors, (1389), 948 states have call successors, (1389) [2024-11-18 16:19:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 10063 transitions. [2024-11-18 16:19:36,250 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 10063 transitions. Word has length 84 [2024-11-18 16:19:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:36,251 INFO L471 AbstractCegarLoop]: Abstraction has 8239 states and 10063 transitions. [2024-11-18 16:19:36,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 10063 transitions. [2024-11-18 16:19:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:19:36,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:36,256 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:19:36,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:19:36,257 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:36,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash -122478559, now seen corresponding path program 1 times [2024-11-18 16:19:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702838868] [2024-11-18 16:19:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:19:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:36,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702838868] [2024-11-18 16:19:36,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702838868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:36,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:36,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:19:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339679918] [2024-11-18 16:19:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:36,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:19:36,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:36,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:19:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:19:36,364 INFO L87 Difference]: Start difference. First operand 8239 states and 10063 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:37,934 INFO L93 Difference]: Finished difference Result 14349 states and 17530 transitions. [2024-11-18 16:19:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:19:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-18 16:19:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:37,964 INFO L225 Difference]: With dead ends: 14349 [2024-11-18 16:19:37,964 INFO L226 Difference]: Without dead ends: 7216 [2024-11-18 16:19:37,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 16:19:37,980 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 1386 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:37,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1646 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 16:19:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2024-11-18 16:19:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 6873. [2024-11-18 16:19:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6873 states, 5352 states have (on average 1.2027279521674141) internal successors, (6437), 5434 states have internal predecessors, (6437), 786 states have call successors, (786), 659 states have call predecessors, (786), 733 states have return successors, (1051), 786 states have call predecessors, (1051), 783 states have call successors, (1051) [2024-11-18 16:19:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 8274 transitions. [2024-11-18 16:19:38,399 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 8274 transitions. Word has length 93 [2024-11-18 16:19:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:38,400 INFO L471 AbstractCegarLoop]: Abstraction has 6873 states and 8274 transitions. [2024-11-18 16:19:38,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:19:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 8274 transitions. [2024-11-18 16:19:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:38,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:38,405 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] [2024-11-18 16:19:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:19:38,406 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:38,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1286752545, now seen corresponding path program 1 times [2024-11-18 16:19:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656753603] [2024-11-18 16:19:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:38,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:38,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656753603] [2024-11-18 16:19:38,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656753603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:38,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:19:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822531903] [2024-11-18 16:19:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:38,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:19:38,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:19:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:19:38,445 INFO L87 Difference]: Start difference. First operand 6873 states and 8274 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-18 16:19:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:38,908 INFO L93 Difference]: Finished difference Result 7131 states and 8670 transitions. [2024-11-18 16:19:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:19:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:38,937 INFO L225 Difference]: With dead ends: 7131 [2024-11-18 16:19:38,937 INFO L226 Difference]: Without dead ends: 6873 [2024-11-18 16:19:38,943 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 [2024-11-18 16:19:38,943 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 401 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 664 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 [2024-11-18 16:19:38,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 664 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:19:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6873 states. [2024-11-18 16:19:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6873 to 6873. [2024-11-18 16:19:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6873 states, 5352 states have (on average 1.20254110612855) internal successors, (6436), 5434 states have internal predecessors, (6436), 786 states have call successors, (786), 659 states have call predecessors, (786), 733 states have return successors, (1051), 786 states have call predecessors, (1051), 783 states have call successors, (1051) [2024-11-18 16:19:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 8273 transitions. [2024-11-18 16:19:39,476 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 8273 transitions. Word has length 124 [2024-11-18 16:19:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:39,476 INFO L471 AbstractCegarLoop]: Abstraction has 6873 states and 8273 transitions. [2024-11-18 16:19:39,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-18 16:19:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 8273 transitions. [2024-11-18 16:19:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:39,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:39,481 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] [2024-11-18 16:19:39,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:19:39,481 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:39,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash -440392417, now seen corresponding path program 1 times [2024-11-18 16:19:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:39,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878475541] [2024-11-18 16:19:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:39,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878475541] [2024-11-18 16:19:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878475541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:39,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626782606] [2024-11-18 16:19:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:39,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:39,565 INFO L87 Difference]: Start difference. First operand 6873 states and 8273 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-18 16:19:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:40,320 INFO L93 Difference]: Finished difference Result 7405 states and 9101 transitions. [2024-11-18 16:19:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:19:40,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:40,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:40,349 INFO L225 Difference]: With dead ends: 7405 [2024-11-18 16:19:40,349 INFO L226 Difference]: Without dead ends: 7153 [2024-11-18 16:19:40,353 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 [2024-11-18 16:19:40,354 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 912 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:40,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1391 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:19:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2024-11-18 16:19:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7132. [2024-11-18 16:19:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 5588 states have (on average 1.2177881173944165) internal successors, (6805), 5671 states have internal predecessors, (6805), 802 states have call successors, (802), 665 states have call predecessors, (802), 740 states have return successors, (1068), 802 states have call predecessors, (1068), 799 states have call successors, (1068) [2024-11-18 16:19:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 8675 transitions. [2024-11-18 16:19:40,872 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 8675 transitions. Word has length 124 [2024-11-18 16:19:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:40,873 INFO L471 AbstractCegarLoop]: Abstraction has 7132 states and 8675 transitions. [2024-11-18 16:19:40,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-18 16:19:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 8675 transitions. [2024-11-18 16:19:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:40,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:40,878 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] [2024-11-18 16:19:40,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:19:40,879 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:40,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1458040805, now seen corresponding path program 1 times [2024-11-18 16:19:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:40,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467152475] [2024-11-18 16:19:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:40,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467152475] [2024-11-18 16:19:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467152475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:40,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369638041] [2024-11-18 16:19:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:40,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:40,991 INFO L87 Difference]: Start difference. First operand 7132 states and 8675 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:42,078 INFO L93 Difference]: Finished difference Result 7970 states and 9990 transitions. [2024-11-18 16:19:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:42,108 INFO L225 Difference]: With dead ends: 7970 [2024-11-18 16:19:42,108 INFO L226 Difference]: Without dead ends: 7459 [2024-11-18 16:19:42,114 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 [2024-11-18 16:19:42,114 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 931 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:42,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1809 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7459 states. [2024-11-18 16:19:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7459 to 7374. [2024-11-18 16:19:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7374 states, 5807 states have (on average 1.2295505424487687) internal successors, (7140), 5891 states have internal predecessors, (7140), 818 states have call successors, (818), 671 states have call predecessors, (818), 747 states have return successors, (1087), 819 states have call predecessors, (1087), 815 states have call successors, (1087) [2024-11-18 16:19:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7374 states to 7374 states and 9045 transitions. [2024-11-18 16:19:42,649 INFO L78 Accepts]: Start accepts. Automaton has 7374 states and 9045 transitions. Word has length 124 [2024-11-18 16:19:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:42,655 INFO L471 AbstractCegarLoop]: Abstraction has 7374 states and 9045 transitions. [2024-11-18 16:19:42,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7374 states and 9045 transitions. [2024-11-18 16:19:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:42,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:42,669 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] [2024-11-18 16:19:42,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:19:42,670 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:42,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1339599331, now seen corresponding path program 1 times [2024-11-18 16:19:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:42,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121230259] [2024-11-18 16:19:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121230259] [2024-11-18 16:19:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121230259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656071553] [2024-11-18 16:19:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:42,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:42,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:42,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:42,902 INFO L87 Difference]: Start difference. First operand 7374 states and 9045 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:44,558 INFO L93 Difference]: Finished difference Result 8736 states and 11179 transitions. [2024-11-18 16:19:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:44,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:44,622 INFO L225 Difference]: With dead ends: 8736 [2024-11-18 16:19:44,626 INFO L226 Difference]: Without dead ends: 7983 [2024-11-18 16:19:44,639 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 [2024-11-18 16:19:44,640 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 906 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:44,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2385 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:19:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2024-11-18 16:19:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7887. [2024-11-18 16:19:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7887 states, 6272 states have (on average 1.2533482142857142) internal successors, (7861), 6360 states have internal predecessors, (7861), 850 states have call successors, (850), 683 states have call predecessors, (850), 763 states have return successors, (1131), 853 states have call predecessors, (1131), 847 states have call successors, (1131) [2024-11-18 16:19:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7887 states to 7887 states and 9842 transitions. [2024-11-18 16:19:45,518 INFO L78 Accepts]: Start accepts. Automaton has 7887 states and 9842 transitions. Word has length 124 [2024-11-18 16:19:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:45,518 INFO L471 AbstractCegarLoop]: Abstraction has 7887 states and 9842 transitions. [2024-11-18 16:19:45,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7887 states and 9842 transitions. [2024-11-18 16:19:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:45,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:45,525 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] [2024-11-18 16:19:45,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:19:45,525 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:45,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash 49694683, now seen corresponding path program 1 times [2024-11-18 16:19:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:45,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097680343] [2024-11-18 16:19:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097680343] [2024-11-18 16:19:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097680343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:45,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:45,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140378710] [2024-11-18 16:19:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:45,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:45,611 INFO L87 Difference]: Start difference. First operand 7887 states and 9842 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:46,772 INFO L93 Difference]: Finished difference Result 10379 states and 13782 transitions. [2024-11-18 16:19:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:46,801 INFO L225 Difference]: With dead ends: 10379 [2024-11-18 16:19:46,802 INFO L226 Difference]: Without dead ends: 9113 [2024-11-18 16:19:46,807 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 [2024-11-18 16:19:46,808 INFO L432 NwaCegarLoop]: 597 mSDtfsCounter, 901 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:46,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2373 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9113 states. [2024-11-18 16:19:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9113 to 8994. [2024-11-18 16:19:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 7277 states have (on average 1.2979249690806651) internal successors, (9445), 7379 states have internal predecessors, (9445), 914 states have call successors, (914), 707 states have call predecessors, (914), 801 states have return successors, (1243), 921 states have call predecessors, (1243), 911 states have call successors, (1243) [2024-11-18 16:19:47,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 11602 transitions. [2024-11-18 16:19:47,461 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 11602 transitions. Word has length 124 [2024-11-18 16:19:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:47,463 INFO L471 AbstractCegarLoop]: Abstraction has 8994 states and 11602 transitions. [2024-11-18 16:19:47,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 11602 transitions. [2024-11-18 16:19:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:47,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:47,471 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] [2024-11-18 16:19:47,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:19:47,471 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:47,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1983699363, now seen corresponding path program 1 times [2024-11-18 16:19:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380681697] [2024-11-18 16:19:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380681697] [2024-11-18 16:19:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380681697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:47,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383626079] [2024-11-18 16:19:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:47,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:47,554 INFO L87 Difference]: Start difference. First operand 8994 states and 11602 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:48,705 INFO L93 Difference]: Finished difference Result 11715 states and 16009 transitions. [2024-11-18 16:19:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:48,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:48,873 INFO L225 Difference]: With dead ends: 11715 [2024-11-18 16:19:48,873 INFO L226 Difference]: Without dead ends: 9342 [2024-11-18 16:19:48,881 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 [2024-11-18 16:19:48,882 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 699 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:48,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 961 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:19:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9342 states. [2024-11-18 16:19:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9342 to 8994. [2024-11-18 16:19:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 7277 states have (on average 1.2966881956850351) internal successors, (9436), 7379 states have internal predecessors, (9436), 914 states have call successors, (914), 707 states have call predecessors, (914), 801 states have return successors, (1243), 921 states have call predecessors, (1243), 911 states have call successors, (1243) [2024-11-18 16:19:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 11593 transitions. [2024-11-18 16:19:49,517 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 11593 transitions. Word has length 124 [2024-11-18 16:19:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:49,518 INFO L471 AbstractCegarLoop]: Abstraction has 8994 states and 11593 transitions. [2024-11-18 16:19:49,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 11593 transitions. [2024-11-18 16:19:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:49,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:49,525 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] [2024-11-18 16:19:49,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:19:49,525 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:49,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1004125535, now seen corresponding path program 1 times [2024-11-18 16:19:49,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865816049] [2024-11-18 16:19:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:49,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865816049] [2024-11-18 16:19:49,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865816049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:49,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:49,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:49,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639124662] [2024-11-18 16:19:49,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:49,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:49,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:49,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:49,587 INFO L87 Difference]: Start difference. First operand 8994 states and 11593 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:50,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:50,497 INFO L93 Difference]: Finished difference Result 11686 states and 15933 transitions. [2024-11-18 16:19:50,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:50,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:50,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:50,529 INFO L225 Difference]: With dead ends: 11686 [2024-11-18 16:19:50,529 INFO L226 Difference]: Without dead ends: 9313 [2024-11-18 16:19:50,541 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 [2024-11-18 16:19:50,547 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 696 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:50,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 953 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:19:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2024-11-18 16:19:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 8994. [2024-11-18 16:19:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 7277 states have (on average 1.295451422289405) internal successors, (9427), 7379 states have internal predecessors, (9427), 914 states have call successors, (914), 707 states have call predecessors, (914), 801 states have return successors, (1243), 921 states have call predecessors, (1243), 911 states have call successors, (1243) [2024-11-18 16:19:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 11584 transitions. [2024-11-18 16:19:51,516 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 11584 transitions. Word has length 124 [2024-11-18 16:19:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:51,517 INFO L471 AbstractCegarLoop]: Abstraction has 8994 states and 11584 transitions. [2024-11-18 16:19:51,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 11584 transitions. [2024-11-18 16:19:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:51,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:51,523 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] [2024-11-18 16:19:51,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:19:51,524 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:51,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1393344995, now seen corresponding path program 1 times [2024-11-18 16:19:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237001725] [2024-11-18 16:19:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:51,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237001725] [2024-11-18 16:19:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237001725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:19:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746504436] [2024-11-18 16:19:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:51,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:19:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:19:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:19:51,621 INFO L87 Difference]: Start difference. First operand 8994 states and 11584 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:52,680 INFO L93 Difference]: Finished difference Result 11657 states and 15857 transitions. [2024-11-18 16:19:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:19:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:52,734 INFO L225 Difference]: With dead ends: 11657 [2024-11-18 16:19:52,738 INFO L226 Difference]: Without dead ends: 9284 [2024-11-18 16:19:52,758 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 [2024-11-18 16:19:52,765 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 693 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:52,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 945 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:19:52,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9284 states. [2024-11-18 16:19:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9284 to 8994. [2024-11-18 16:19:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 7277 states have (on average 1.294214648893775) internal successors, (9418), 7379 states have internal predecessors, (9418), 914 states have call successors, (914), 707 states have call predecessors, (914), 801 states have return successors, (1243), 921 states have call predecessors, (1243), 911 states have call successors, (1243) [2024-11-18 16:19:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 11575 transitions. [2024-11-18 16:19:53,953 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 11575 transitions. Word has length 124 [2024-11-18 16:19:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:53,954 INFO L471 AbstractCegarLoop]: Abstraction has 8994 states and 11575 transitions. [2024-11-18 16:19:53,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 11575 transitions. [2024-11-18 16:19:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:53,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:53,967 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] [2024-11-18 16:19:53,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:19:53,968 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:53,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -362304097, now seen corresponding path program 1 times [2024-11-18 16:19:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953434372] [2024-11-18 16:19:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:54,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953434372] [2024-11-18 16:19:54,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953434372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:54,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:54,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165673460] [2024-11-18 16:19:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:54,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:54,117 INFO L87 Difference]: Start difference. First operand 8994 states and 11575 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:55,512 INFO L93 Difference]: Finished difference Result 14250 states and 19912 transitions. [2024-11-18 16:19:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:55,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:55,554 INFO L225 Difference]: With dead ends: 14250 [2024-11-18 16:19:55,555 INFO L226 Difference]: Without dead ends: 11877 [2024-11-18 16:19:55,576 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 [2024-11-18 16:19:55,577 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 942 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:55,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2277 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:19:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2024-11-18 16:19:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 11301. [2024-11-18 16:19:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11301 states, 9370 states have (on average 1.3577374599786554) internal successors, (12722), 9518 states have internal predecessors, (12722), 1034 states have call successors, (1034), 755 states have call predecessors, (1034), 895 states have return successors, (1555), 1049 states have call predecessors, (1555), 1031 states have call successors, (1555) [2024-11-18 16:19:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11301 states to 11301 states and 15311 transitions. [2024-11-18 16:19:57,479 INFO L78 Accepts]: Start accepts. Automaton has 11301 states and 15311 transitions. Word has length 124 [2024-11-18 16:19:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:57,480 INFO L471 AbstractCegarLoop]: Abstraction has 11301 states and 15311 transitions. [2024-11-18 16:19:57,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 11301 states and 15311 transitions. [2024-11-18 16:19:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:19:57,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:57,486 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] [2024-11-18 16:19:57,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:19:57,486 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:57,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2026259933, now seen corresponding path program 1 times [2024-11-18 16:19:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457534393] [2024-11-18 16:19:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457534393] [2024-11-18 16:19:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457534393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:57,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:57,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624683189] [2024-11-18 16:19:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:57,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:57,638 INFO L87 Difference]: Start difference. First operand 11301 states and 15311 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:19:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:59,750 INFO L93 Difference]: Finished difference Result 21933 states and 32722 transitions. [2024-11-18 16:19:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:19:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:59,831 INFO L225 Difference]: With dead ends: 21933 [2024-11-18 16:19:59,831 INFO L226 Difference]: Without dead ends: 17253 [2024-11-18 16:19:59,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:19:59,843 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 1085 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:59,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1685 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:19:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17253 states. [2024-11-18 16:20:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17253 to 16136. [2024-11-18 16:20:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 13731 states have (on average 1.4322336319277547) internal successors, (19666), 14025 states have internal predecessors, (19666), 1266 states have call successors, (1266), 851 states have call predecessors, (1266), 1137 states have return successors, (2555), 1297 states have call predecessors, (2555), 1263 states have call successors, (2555) [2024-11-18 16:20:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23487 transitions. [2024-11-18 16:20:01,242 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23487 transitions. Word has length 124 [2024-11-18 16:20:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:01,242 INFO L471 AbstractCegarLoop]: Abstraction has 16136 states and 23487 transitions. [2024-11-18 16:20:01,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23487 transitions. [2024-11-18 16:20:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:20:01,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:01,251 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] [2024-11-18 16:20:01,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:20:01,256 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:01,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -667636257, now seen corresponding path program 1 times [2024-11-18 16:20:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:01,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011437172] [2024-11-18 16:20:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011437172] [2024-11-18 16:20:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011437172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:01,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:01,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511464714] [2024-11-18 16:20:01,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:01,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:01,371 INFO L87 Difference]: Start difference. First operand 16136 states and 23487 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:03,948 INFO L93 Difference]: Finished difference Result 38128 states and 61400 transitions. [2024-11-18 16:20:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:03,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:20:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:04,051 INFO L225 Difference]: With dead ends: 38128 [2024-11-18 16:20:04,052 INFO L226 Difference]: Without dead ends: 28613 [2024-11-18 16:20:04,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:20:04,088 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 912 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:04,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 2253 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 16:20:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28613 states. [2024-11-18 16:20:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28613 to 26971. [2024-11-18 16:20:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26971 states, 23472 states have (on average 1.508776414451261) internal successors, (35414), 24220 states have internal predecessors, (35414), 1714 states have call successors, (1714), 1043 states have call predecessors, (1714), 1783 states have return successors, (6075), 1777 states have call predecessors, (6075), 1711 states have call successors, (6075) [2024-11-18 16:20:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26971 states to 26971 states and 43203 transitions. [2024-11-18 16:20:05,937 INFO L78 Accepts]: Start accepts. Automaton has 26971 states and 43203 transitions. Word has length 124 [2024-11-18 16:20:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:05,938 INFO L471 AbstractCegarLoop]: Abstraction has 26971 states and 43203 transitions. [2024-11-18 16:20:05,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 26971 states and 43203 transitions. [2024-11-18 16:20:05,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:20:05,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:05,949 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] [2024-11-18 16:20:05,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 16:20:05,949 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:05,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1724367459, now seen corresponding path program 1 times [2024-11-18 16:20:05,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:05,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092506310] [2024-11-18 16:20:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:06,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:06,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092506310] [2024-11-18 16:20:06,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092506310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:06,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:20:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927970828] [2024-11-18 16:20:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:06,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:20:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:20:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:20:06,032 INFO L87 Difference]: Start difference. First operand 26971 states and 43203 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:10,069 INFO L93 Difference]: Finished difference Result 74295 states and 132142 transitions. [2024-11-18 16:20:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:20:10,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:20:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:10,300 INFO L225 Difference]: With dead ends: 74295 [2024-11-18 16:20:10,300 INFO L226 Difference]: Without dead ends: 53945 [2024-11-18 16:20:10,396 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 [2024-11-18 16:20:10,396 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 988 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:10,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 2241 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:20:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53945 states. [2024-11-18 16:20:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53945 to 51218. [2024-11-18 16:20:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51218 states, 45077 states have (on average 1.5684717261574639) internal successors, (70702), 47219 states have internal predecessors, (70702), 2578 states have call successors, (2578), 1427 states have call predecessors, (2578), 3561 states have return successors, (19227), 2705 states have call predecessors, (19227), 2575 states have call successors, (19227) [2024-11-18 16:20:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51218 states to 51218 states and 92507 transitions. [2024-11-18 16:20:14,993 INFO L78 Accepts]: Start accepts. Automaton has 51218 states and 92507 transitions. Word has length 124 [2024-11-18 16:20:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:20:14,993 INFO L471 AbstractCegarLoop]: Abstraction has 51218 states and 92507 transitions. [2024-11-18 16:20:14,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:14,994 INFO L276 IsEmpty]: Start isEmpty. Operand 51218 states and 92507 transitions. [2024-11-18 16:20:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 16:20:15,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:20:15,014 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] [2024-11-18 16:20:15,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 16:20:15,014 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:20:15,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:20:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash -372982241, now seen corresponding path program 1 times [2024-11-18 16:20:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:20:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771986659] [2024-11-18 16:20:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:20:15,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:20:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:20:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:20:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:20:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771986659] [2024-11-18 16:20:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771986659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:20:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:20:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:20:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200527981] [2024-11-18 16:20:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:20:15,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:20:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:20:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:20:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:20:15,089 INFO L87 Difference]: Start difference. First operand 51218 states and 92507 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-11-18 16:20:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:20:20,439 INFO L93 Difference]: Finished difference Result 104571 states and 204715 transitions. [2024-11-18 16:20:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:20:20,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-18 16:20:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:20:20,816 INFO L225 Difference]: With dead ends: 104571 [2024-11-18 16:20:20,817 INFO L226 Difference]: Without dead ends: 59974 [2024-11-18 16:20:20,963 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 [2024-11-18 16:20:20,965 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 683 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:20:20,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 905 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:20:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59974 states.