./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_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-mul-div-a046e57-m [2024-10-12 21:43:50,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:43:50,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:43:50,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:43:50,593 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:43:50,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:43:50,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:43:50,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:43:50,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:43:50,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:43:50,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:43:50,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:43:50,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:43:50,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:43:50,632 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:43:50,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:43:50,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:43:50,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:43:50,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:43:50,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:43:50,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:43:50,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:43:50,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:43:50,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:43:50,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:43:50,636 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:43:50,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:43:50,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:43:50,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:43:50,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:43:50,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:43:50,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:43:50,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:50,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:43:50,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:43:50,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:43:50,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:43:50,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:43:50,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:43:50,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:43:50,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:43:50,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:43:50,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2024-10-12 21:43:50,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:43:50,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:43:50,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:43:50,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:43:50,967 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:43:50,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-10-12 21:43:52,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:43:52,696 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:43:52,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-10-12 21:43:52,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9e5ca13/b50f0ba748be428a94040fc2b14375eb/FLAG7dac1f5bc [2024-10-12 21:43:53,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9e5ca13/b50f0ba748be428a94040fc2b14375eb [2024-10-12 21:43:53,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:43:53,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:43:53,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:53,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:43:53,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:43:53,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b6ed71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53, skipping insertion in model container [2024-10-12 21:43:53,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:43:53,304 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-10-12 21:43:53,363 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-10-12 21:43:53,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:53,456 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:43:53,468 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2024-10-12 21:43:53,484 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2024-10-12 21:43:53,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:43:53,551 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:43:53,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53 WrapperNode [2024-10-12 21:43:53,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:43:53,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:53,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:43:53,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:43:53,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,643 INFO L138 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 774 [2024-10-12 21:43:53,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:43:53,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:43:53,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:43:53,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:43:53,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,697 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 21:43:53,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:43:53,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:43:53,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:43:53,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:43:53,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (1/1) ... [2024-10-12 21:43:53,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:43:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:43:53,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:43:53,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:43:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:43:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-12 21:43:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-12 21:43:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-10-12 21:43:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-10-12 21:43:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-12 21:43:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-12 21:43:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-12 21:43:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-12 21:43:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-10-12 21:43:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-12 21:43:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-12 21:43:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-10-12 21:43:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-10-12 21:43:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-10-12 21:43:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-12 21:43:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-12 21:43:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-10-12 21:43:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:43:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:43:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-12 21:43:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-12 21:43:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-10-12 21:43:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-10-12 21:43:54,012 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:43:54,015 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:43:54,887 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-10-12 21:43:54,889 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:43:54,956 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:43:54,957 INFO L314 CfgBuilder]: Removed 14 assume(true) statements. [2024-10-12 21:43:54,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:54 BoogieIcfgContainer [2024-10-12 21:43:54,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:43:54,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:43:54,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:43:54,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:43:54,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:43:53" (1/3) ... [2024-10-12 21:43:54,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3885c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:54, skipping insertion in model container [2024-10-12 21:43:54,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:53" (2/3) ... [2024-10-12 21:43:54,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3885c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:54, skipping insertion in model container [2024-10-12 21:43:54,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:54" (3/3) ... [2024-10-12 21:43:54,968 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2024-10-12 21:43:54,982 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:43:54,982 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:43:55,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:43:55,082 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;@74b72338, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:43:55,082 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:43:55,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 277 states have (on average 1.6967509025270757) internal successors, (470), 285 states have internal predecessors, (470), 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) [2024-10-12 21:43:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:55,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:55,105 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:55,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:55,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2104233725, now seen corresponding path program 1 times [2024-10-12 21:43:55,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:55,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760977321] [2024-10-12 21:43:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:55,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:55,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:55,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760977321] [2024-10-12 21:43:55,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760977321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:55,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:55,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:43:55,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828435296] [2024-10-12 21:43:55,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:55,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:43:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:55,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:43:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:43:55,579 INFO L87 Difference]: Start difference. First operand has 332 states, 277 states have (on average 1.6967509025270757) internal successors, (470), 285 states have internal predecessors, (470), 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 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:56,639 INFO L93 Difference]: Finished difference Result 662 states and 1082 transitions. [2024-10-12 21:43:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 21:43:56,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:56,660 INFO L225 Difference]: With dead ends: 662 [2024-10-12 21:43:56,661 INFO L226 Difference]: Without dead ends: 343 [2024-10-12 21:43:56,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:43:56,673 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 518 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:56,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1055 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:43:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-10-12 21:43:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2024-10-12 21:43:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 274 states have (on average 1.583941605839416) internal successors, (434), 279 states have internal predecessors, (434), 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) [2024-10-12 21:43:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 504 transitions. [2024-10-12 21:43:56,766 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 504 transitions. Word has length 58 [2024-10-12 21:43:56,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:56,767 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 504 transitions. [2024-10-12 21:43:56,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:56,769 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 504 transitions. [2024-10-12 21:43:56,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:56,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:56,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:56,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:43:56,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:56,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -162147461, now seen corresponding path program 1 times [2024-10-12 21:43:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174574802] [2024-10-12 21:43:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:56,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:57,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174574802] [2024-10-12 21:43:57,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174574802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:57,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:57,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361360078] [2024-10-12 21:43:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:57,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:57,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:57,126 INFO L87 Difference]: Start difference. First operand 326 states and 504 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:58,186 INFO L93 Difference]: Finished difference Result 532 states and 801 transitions. [2024-10-12 21:43:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:43:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:58,195 INFO L225 Difference]: With dead ends: 532 [2024-10-12 21:43:58,199 INFO L226 Difference]: Without dead ends: 451 [2024-10-12 21:43:58,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:43:58,201 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 626 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:58,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1310 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:43:58,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-10-12 21:43:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 414. [2024-10-12 21:43:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 342 states have (on average 1.5497076023391814) internal successors, (530), 349 states have internal predecessors, (530), 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) [2024-10-12 21:43:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 627 transitions. [2024-10-12 21:43:58,267 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 627 transitions. Word has length 58 [2024-10-12 21:43:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:58,268 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 627 transitions. [2024-10-12 21:43:58,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 627 transitions. [2024-10-12 21:43:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:58,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:58,273 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:58,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:43:58,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:58,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:58,275 INFO L85 PathProgramCache]: Analyzing trace with hash -296381125, now seen corresponding path program 1 times [2024-10-12 21:43:58,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:58,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735117991] [2024-10-12 21:43:58,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:58,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735117991] [2024-10-12 21:43:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735117991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:43:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636227383] [2024-10-12 21:43:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:58,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:43:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:43:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:43:58,525 INFO L87 Difference]: Start difference. First operand 414 states and 627 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:43:59,706 INFO L93 Difference]: Finished difference Result 734 states and 1076 transitions. [2024-10-12 21:43:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 21:43:59,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-10-12 21:43:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:43:59,712 INFO L225 Difference]: With dead ends: 734 [2024-10-12 21:43:59,712 INFO L226 Difference]: Without dead ends: 572 [2024-10-12 21:43:59,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-10-12 21:43:59,715 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1201 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:43:59,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 1310 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:43:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-10-12 21:43:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 502. [2024-10-12 21:43:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 410 states have (on average 1.524390243902439) internal successors, (625), 419 states have internal predecessors, (625), 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) [2024-10-12 21:43:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 752 transitions. [2024-10-12 21:43:59,763 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 752 transitions. Word has length 58 [2024-10-12 21:43:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:43:59,763 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 752 transitions. [2024-10-12 21:43:59,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:43:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 752 transitions. [2024-10-12 21:43:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:43:59,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:43:59,770 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:43:59,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:43:59,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:43:59,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:43:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1631891577, now seen corresponding path program 1 times [2024-10-12 21:43:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:43:59,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341627952] [2024-10-12 21:43:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:43:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:43:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:43:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:43:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:43:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:43:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:43:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:43:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:43:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:43:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:43:59,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:43:59,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341627952] [2024-10-12 21:43:59,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341627952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:43:59,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:43:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:43:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952648974] [2024-10-12 21:43:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:43:59,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:43:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:43:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:43:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:43:59,923 INFO L87 Difference]: Start difference. First operand 502 states and 752 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:01,019 INFO L93 Difference]: Finished difference Result 796 states and 1170 transitions. [2024-10-12 21:44:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:44:01,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:44:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:01,024 INFO L225 Difference]: With dead ends: 796 [2024-10-12 21:44:01,024 INFO L226 Difference]: Without dead ends: 552 [2024-10-12 21:44:01,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:01,026 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 423 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:01,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1816 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-10-12 21:44:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 514. [2024-10-12 21:44:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 419 states have (on average 1.5131264916467781) internal successors, (634), 428 states have internal predecessors, (634), 59 states have call successors, (59), 29 states have call predecessors, (59), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2024-10-12 21:44:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 764 transitions. [2024-10-12 21:44:01,060 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 764 transitions. Word has length 58 [2024-10-12 21:44:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:01,060 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 764 transitions. [2024-10-12 21:44:01,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 764 transitions. [2024-10-12 21:44:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:01,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:01,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:01,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:44:01,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:01,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1569851963, now seen corresponding path program 1 times [2024-10-12 21:44:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703765308] [2024-10-12 21:44:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703765308] [2024-10-12 21:44:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703765308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949811882] [2024-10-12 21:44:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:01,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:01,198 INFO L87 Difference]: Start difference. First operand 514 states and 764 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:02,201 INFO L93 Difference]: Finished difference Result 802 states and 1165 transitions. [2024-10-12 21:44:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-10-12 21:44:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:02,205 INFO L225 Difference]: With dead ends: 802 [2024-10-12 21:44:02,206 INFO L226 Difference]: Without dead ends: 546 [2024-10-12 21:44:02,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:02,207 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 628 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:02,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1615 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-10-12 21:44:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 518. [2024-10-12 21:44:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 422 states have (on average 1.504739336492891) internal successors, (635), 431 states have internal predecessors, (635), 59 states have call successors, (59), 29 states have call predecessors, (59), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2024-10-12 21:44:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 766 transitions. [2024-10-12 21:44:02,249 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 766 transitions. Word has length 58 [2024-10-12 21:44:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:02,250 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 766 transitions. [2024-10-12 21:44:02,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 766 transitions. [2024-10-12 21:44:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 21:44:02,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:02,253 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:02,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:44:02,253 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:02,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash -674131335, now seen corresponding path program 1 times [2024-10-12 21:44:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:02,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829936352] [2024-10-12 21:44:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:02,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:02,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829936352] [2024-10-12 21:44:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829936352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:02,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:02,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 21:44:02,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564644773] [2024-10-12 21:44:02,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:02,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:44:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:44:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:02,393 INFO L87 Difference]: Start difference. First operand 518 states and 766 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-12 21:44:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:04,238 INFO L93 Difference]: Finished difference Result 1770 states and 2503 transitions. [2024-10-12 21:44:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-12 21:44:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2024-10-12 21:44:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:04,246 INFO L225 Difference]: With dead ends: 1770 [2024-10-12 21:44:04,246 INFO L226 Difference]: Without dead ends: 1492 [2024-10-12 21:44:04,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 21:44:04,249 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 2636 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:04,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 1781 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 21:44:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-10-12 21:44:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1365. [2024-10-12 21:44:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1080 states have (on average 1.4064814814814814) internal successors, (1519), 1104 states have internal predecessors, (1519), 147 states have call successors, (147), 112 states have call predecessors, (147), 136 states have return successors, (189), 151 states have call predecessors, (189), 143 states have call successors, (189) [2024-10-12 21:44:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1855 transitions. [2024-10-12 21:44:04,402 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1855 transitions. Word has length 58 [2024-10-12 21:44:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:04,403 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1855 transitions. [2024-10-12 21:44:04,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-12 21:44:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1855 transitions. [2024-10-12 21:44:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:44:04,406 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:04,407 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] [2024-10-12 21:44:04,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:44:04,407 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:04,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -216401402, now seen corresponding path program 1 times [2024-10-12 21:44:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444674932] [2024-10-12 21:44:04,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:04,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444674932] [2024-10-12 21:44:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444674932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:04,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:04,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976754797] [2024-10-12 21:44:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:04,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:04,598 INFO L87 Difference]: Start difference. First operand 1365 states and 1855 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:44:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:05,726 INFO L93 Difference]: Finished difference Result 2539 states and 3336 transitions. [2024-10-12 21:44:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 21:44:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-10-12 21:44:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:05,735 INFO L225 Difference]: With dead ends: 2539 [2024-10-12 21:44:05,735 INFO L226 Difference]: Without dead ends: 1627 [2024-10-12 21:44:05,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-10-12 21:44:05,739 INFO L432 NwaCegarLoop]: 245 mSDtfsCounter, 1219 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:05,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1110 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2024-10-12 21:44:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1310. [2024-10-12 21:44:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1041 states have (on average 1.4024975984630164) internal successors, (1460), 1060 states have internal predecessors, (1460), 141 states have call successors, (141), 107 states have call predecessors, (141), 126 states have return successors, (174), 144 states have call predecessors, (174), 137 states have call successors, (174) [2024-10-12 21:44:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1775 transitions. [2024-10-12 21:44:05,859 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1775 transitions. Word has length 59 [2024-10-12 21:44:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:05,859 INFO L471 AbstractCegarLoop]: Abstraction has 1310 states and 1775 transitions. [2024-10-12 21:44:05,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:44:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1775 transitions. [2024-10-12 21:44:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 21:44:05,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:05,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:05,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:44:05,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:05,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2453316, now seen corresponding path program 1 times [2024-10-12 21:44:05,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:05,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964939079] [2024-10-12 21:44:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:05,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964939079] [2024-10-12 21:44:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964939079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:05,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:05,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732474870] [2024-10-12 21:44:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:05,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:05,992 INFO L87 Difference]: Start difference. First operand 1310 states and 1775 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:44:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:06,835 INFO L93 Difference]: Finished difference Result 3482 states and 4582 transitions. [2024-10-12 21:44:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 21:44:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-10-12 21:44:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:06,873 INFO L225 Difference]: With dead ends: 3482 [2024-10-12 21:44:06,873 INFO L226 Difference]: Without dead ends: 2419 [2024-10-12 21:44:06,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:06,878 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 1202 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:06,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 880 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:44:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2024-10-12 21:44:07,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2275. [2024-10-12 21:44:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1766 states have (on average 1.339184597961495) internal successors, (2365), 1801 states have internal predecessors, (2365), 257 states have call successors, (257), 206 states have call predecessors, (257), 250 states have return successors, (362), 269 states have call predecessors, (362), 253 states have call successors, (362) [2024-10-12 21:44:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2984 transitions. [2024-10-12 21:44:07,090 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2984 transitions. Word has length 59 [2024-10-12 21:44:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:07,092 INFO L471 AbstractCegarLoop]: Abstraction has 2275 states and 2984 transitions. [2024-10-12 21:44:07,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 21:44:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2984 transitions. [2024-10-12 21:44:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 21:44:07,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:07,093 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] [2024-10-12 21:44:07,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:44:07,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:07,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 758916333, now seen corresponding path program 1 times [2024-10-12 21:44:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:07,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496553889] [2024-10-12 21:44:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:07,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:07,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496553889] [2024-10-12 21:44:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496553889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:07,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785770066] [2024-10-12 21:44:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:07,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:07,193 INFO L87 Difference]: Start difference. First operand 2275 states and 2984 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:07,949 INFO L93 Difference]: Finished difference Result 5296 states and 6846 transitions. [2024-10-12 21:44:07,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 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 60 [2024-10-12 21:44:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:07,966 INFO L225 Difference]: With dead ends: 5296 [2024-10-12 21:44:07,966 INFO L226 Difference]: Without dead ends: 3268 [2024-10-12 21:44:07,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:07,972 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 832 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:07,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 884 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2024-10-12 21:44:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2982. [2024-10-12 21:44:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2302 states have (on average 1.322328410078193) internal successors, (3044), 2342 states have internal predecessors, (3044), 341 states have call successors, (341), 279 states have call predecessors, (341), 337 states have return successors, (466), 362 states have call predecessors, (466), 337 states have call successors, (466) [2024-10-12 21:44:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 3851 transitions. [2024-10-12 21:44:08,252 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 3851 transitions. Word has length 60 [2024-10-12 21:44:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:08,253 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 3851 transitions. [2024-10-12 21:44:08,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 3851 transitions. [2024-10-12 21:44:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-12 21:44:08,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:08,254 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] [2024-10-12 21:44:08,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:44:08,254 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1186493772, now seen corresponding path program 1 times [2024-10-12 21:44:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:08,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405131949] [2024-10-12 21:44:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:08,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405131949] [2024-10-12 21:44:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405131949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129891770] [2024-10-12 21:44:08,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:08,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:08,368 INFO L87 Difference]: Start difference. First operand 2982 states and 3851 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:09,202 INFO L93 Difference]: Finished difference Result 6248 states and 7946 transitions. [2024-10-12 21:44:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 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 [2024-10-12 21:44:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:09,222 INFO L225 Difference]: With dead ends: 6248 [2024-10-12 21:44:09,222 INFO L226 Difference]: Without dead ends: 3512 [2024-10-12 21:44:09,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:09,229 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 920 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:09,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 945 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:44:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2024-10-12 21:44:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3235. [2024-10-12 21:44:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 2498 states have (on average 1.3142514011208968) internal successors, (3283), 2540 states have internal predecessors, (3283), 369 states have call successors, (369), 304 states have call predecessors, (369), 366 states have return successors, (498), 392 states have call predecessors, (498), 365 states have call successors, (498) [2024-10-12 21:44:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4150 transitions. [2024-10-12 21:44:09,520 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4150 transitions. Word has length 66 [2024-10-12 21:44:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:09,520 INFO L471 AbstractCegarLoop]: Abstraction has 3235 states and 4150 transitions. [2024-10-12 21:44:09,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-12 21:44:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4150 transitions. [2024-10-12 21:44:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-12 21:44:09,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:09,522 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] [2024-10-12 21:44:09,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:44:09,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:09,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1904970210, now seen corresponding path program 1 times [2024-10-12 21:44:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273285380] [2024-10-12 21:44:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273285380] [2024-10-12 21:44:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273285380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:09,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882197730] [2024-10-12 21:44:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:09,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:09,610 INFO L87 Difference]: Start difference. First operand 3235 states and 4150 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:10,680 INFO L93 Difference]: Finished difference Result 4256 states and 5383 transitions. [2024-10-12 21:44:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:44:10,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 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 67 [2024-10-12 21:44:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:10,708 INFO L225 Difference]: With dead ends: 4256 [2024-10-12 21:44:10,708 INFO L226 Difference]: Without dead ends: 4253 [2024-10-12 21:44:10,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-10-12 21:44:10,711 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 1627 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:10,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 714 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:44:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2024-10-12 21:44:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 3655. [2024-10-12 21:44:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2811 states have (on average 1.3020277481323372) internal successors, (3660), 2856 states have internal predecessors, (3660), 419 states have call successors, (419), 348 states have call predecessors, (419), 423 states have return successors, (575), 452 states have call predecessors, (575), 416 states have call successors, (575) [2024-10-12 21:44:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4654 transitions. [2024-10-12 21:44:11,036 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4654 transitions. Word has length 67 [2024-10-12 21:44:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:11,037 INFO L471 AbstractCegarLoop]: Abstraction has 3655 states and 4654 transitions. [2024-10-12 21:44:11,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4654 transitions. [2024-10-12 21:44:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 21:44:11,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:11,038 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] [2024-10-12 21:44:11,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:44:11,038 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:11,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1076567978, now seen corresponding path program 1 times [2024-10-12 21:44:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134269954] [2024-10-12 21:44:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134269954] [2024-10-12 21:44:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134269954] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:44:11,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550922887] [2024-10-12 21:44:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:11,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:44:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:44:11,206 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:44:11,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:44:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:11,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:44:11,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:44:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:11,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:44:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550922887] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:44:11,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:44:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-10-12 21:44:11,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038057435] [2024-10-12 21:44:11,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:44:11,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 21:44:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 21:44:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:11,673 INFO L87 Difference]: Start difference. First operand 3655 states and 4654 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:44:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:13,871 INFO L93 Difference]: Finished difference Result 7655 states and 9560 transitions. [2024-10-12 21:44:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 21:44:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 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 68 [2024-10-12 21:44:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:13,915 INFO L225 Difference]: With dead ends: 7655 [2024-10-12 21:44:13,915 INFO L226 Difference]: Without dead ends: 7652 [2024-10-12 21:44:13,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-10-12 21:44:13,920 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 1370 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:13,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 1874 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 21:44:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2024-10-12 21:44:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 6772. [2024-10-12 21:44:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6772 states, 5186 states have (on average 1.2830698033166217) internal successors, (6654), 5266 states have internal predecessors, (6654), 778 states have call successors, (778), 662 states have call predecessors, (778), 806 states have return successors, (1076), 845 states have call predecessors, (1076), 775 states have call successors, (1076) [2024-10-12 21:44:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 8508 transitions. [2024-10-12 21:44:14,662 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 8508 transitions. Word has length 68 [2024-10-12 21:44:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:14,662 INFO L471 AbstractCegarLoop]: Abstraction has 6772 states and 8508 transitions. [2024-10-12 21:44:14,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-10-12 21:44:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 8508 transitions. [2024-10-12 21:44:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 21:44:14,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:14,664 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] [2024-10-12 21:44:14,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 21:44:14,864 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,SelfDestructingSolverStorable11 [2024-10-12 21:44:14,865 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:14,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1486209378, now seen corresponding path program 2 times [2024-10-12 21:44:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652697306] [2024-10-12 21:44:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:14,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:14,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652697306] [2024-10-12 21:44:14,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652697306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:14,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:14,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:14,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389453651] [2024-10-12 21:44:14,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:14,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:14,963 INFO L87 Difference]: Start difference. First operand 6772 states and 8508 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:15,953 INFO L93 Difference]: Finished difference Result 9167 states and 11524 transitions. [2024-10-12 21:44:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 21:44:15,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 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 71 [2024-10-12 21:44:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:15,973 INFO L225 Difference]: With dead ends: 9167 [2024-10-12 21:44:15,973 INFO L226 Difference]: Without dead ends: 3529 [2024-10-12 21:44:15,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:44:15,987 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 885 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:15,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 980 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:44:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2024-10-12 21:44:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2606. [2024-10-12 21:44:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2024 states have (on average 1.290513833992095) internal successors, (2612), 2050 states have internal predecessors, (2612), 298 states have call successors, (298), 245 states have call predecessors, (298), 282 states have return successors, (377), 312 states have call predecessors, (377), 295 states have call successors, (377) [2024-10-12 21:44:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3287 transitions. [2024-10-12 21:44:16,269 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3287 transitions. Word has length 71 [2024-10-12 21:44:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:16,269 INFO L471 AbstractCegarLoop]: Abstraction has 2606 states and 3287 transitions. [2024-10-12 21:44:16,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-12 21:44:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3287 transitions. [2024-10-12 21:44:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 21:44:16,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:16,272 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:16,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:44:16,272 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:16,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash -785495608, now seen corresponding path program 1 times [2024-10-12 21:44:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679943391] [2024-10-12 21:44:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-12 21:44:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:44:16,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:16,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679943391] [2024-10-12 21:44:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679943391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:16,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 21:44:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145088134] [2024-10-12 21:44:16,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:16,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 21:44:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 21:44:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 21:44:16,394 INFO L87 Difference]: Start difference. First operand 2606 states and 3287 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:17,860 INFO L93 Difference]: Finished difference Result 7387 states and 9173 transitions. [2024-10-12 21:44:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 21:44:17,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-10-12 21:44:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:17,879 INFO L225 Difference]: With dead ends: 7387 [2024-10-12 21:44:17,879 INFO L226 Difference]: Without dead ends: 5028 [2024-10-12 21:44:17,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-12 21:44:17,885 INFO L432 NwaCegarLoop]: 282 mSDtfsCounter, 879 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:17,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1620 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2024-10-12 21:44:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4721. [2024-10-12 21:44:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3573 states have (on average 1.2504897844948222) internal successors, (4468), 3673 states have internal predecessors, (4468), 565 states have call successors, (565), 473 states have call predecessors, (565), 581 states have return successors, (822), 577 states have call predecessors, (822), 562 states have call successors, (822) [2024-10-12 21:44:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 5855 transitions. [2024-10-12 21:44:18,364 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 5855 transitions. Word has length 76 [2024-10-12 21:44:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:18,364 INFO L471 AbstractCegarLoop]: Abstraction has 4721 states and 5855 transitions. [2024-10-12 21:44:18,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 5855 transitions. [2024-10-12 21:44:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:44:18,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:18,367 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-10-12 21:44:18,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:44:18,367 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:18,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1115085919, now seen corresponding path program 1 times [2024-10-12 21:44:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749345675] [2024-10-12 21:44:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 21:44:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 21:44:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 21:44:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-12 21:44:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 21:44:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 21:44:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:18,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:44:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749345675] [2024-10-12 21:44:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749345675] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-12 21:44:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298856628] [2024-10-12 21:44:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:18,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 21:44:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 21:44:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:18,499 INFO L87 Difference]: Start difference. First operand 4721 states and 5855 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:19,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:19,806 INFO L93 Difference]: Finished difference Result 7388 states and 9140 transitions. [2024-10-12 21:44:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 21:44:19,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-10-12 21:44:19,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:19,825 INFO L225 Difference]: With dead ends: 7388 [2024-10-12 21:44:19,825 INFO L226 Difference]: Without dead ends: 3454 [2024-10-12 21:44:19,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-10-12 21:44:19,836 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 1474 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:19,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1393 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2024-10-12 21:44:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3100. [2024-10-12 21:44:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2347 states have (on average 1.243715381337878) internal successors, (2919), 2418 states have internal predecessors, (2919), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2024-10-12 21:44:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3793 transitions. [2024-10-12 21:44:20,186 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3793 transitions. Word has length 86 [2024-10-12 21:44:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:20,187 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 3793 transitions. [2024-10-12 21:44:20,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-12 21:44:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3793 transitions. [2024-10-12 21:44:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:20,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:20,195 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] [2024-10-12 21:44:20,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:44:20,196 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:20,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1740292059, now seen corresponding path program 1 times [2024-10-12 21:44:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10950792] [2024-10-12 21:44:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10950792] [2024-10-12 21:44:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10950792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 21:44:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131577395] [2024-10-12 21:44:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:20,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 21:44:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 21:44:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 21:44:20,320 INFO L87 Difference]: Start difference. First operand 3100 states and 3793 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:22,052 INFO L93 Difference]: Finished difference Result 3411 states and 4305 transitions. [2024-10-12 21:44:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:22,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:22,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:22,066 INFO L225 Difference]: With dead ends: 3411 [2024-10-12 21:44:22,066 INFO L226 Difference]: Without dead ends: 3180 [2024-10-12 21:44:22,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-12 21:44:22,069 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 727 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:22,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 654 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2024-10-12 21:44:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3100. [2024-10-12 21:44:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2347 states have (on average 1.2432893054963783) internal successors, (2918), 2418 states have internal predecessors, (2918), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2024-10-12 21:44:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3792 transitions. [2024-10-12 21:44:22,799 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3792 transitions. Word has length 112 [2024-10-12 21:44:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:22,800 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 3792 transitions. [2024-10-12 21:44:22,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3792 transitions. [2024-10-12 21:44:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:22,803 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:22,803 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] [2024-10-12 21:44:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:44:22,804 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 293101987, now seen corresponding path program 1 times [2024-10-12 21:44:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575931551] [2024-10-12 21:44:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:22,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:22,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575931551] [2024-10-12 21:44:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575931551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:22,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 21:44:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098216149] [2024-10-12 21:44:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:22,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 21:44:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 21:44:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 21:44:22,983 INFO L87 Difference]: Start difference. First operand 3100 states and 3792 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:25,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:25,190 INFO L93 Difference]: Finished difference Result 3719 states and 4812 transitions. [2024-10-12 21:44:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 21:44:25,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:25,204 INFO L225 Difference]: With dead ends: 3719 [2024-10-12 21:44:25,205 INFO L226 Difference]: Without dead ends: 3494 [2024-10-12 21:44:25,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:25,208 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 1154 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:25,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1031 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:44:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2024-10-12 21:44:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 3333. [2024-10-12 21:44:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 2557 states have (on average 1.275322643723113) internal successors, (3261), 2629 states have internal predecessors, (3261), 383 states have call successors, (383), 306 states have call predecessors, (383), 391 states have return successors, (526), 400 states have call predecessors, (526), 380 states have call successors, (526) [2024-10-12 21:44:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 4170 transitions. [2024-10-12 21:44:25,842 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 4170 transitions. Word has length 112 [2024-10-12 21:44:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:25,842 INFO L471 AbstractCegarLoop]: Abstraction has 3333 states and 4170 transitions. [2024-10-12 21:44:25,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 4170 transitions. [2024-10-12 21:44:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:25,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:25,846 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] [2024-10-12 21:44:25,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:44:25,846 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:25,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1287354783, now seen corresponding path program 1 times [2024-10-12 21:44:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170916326] [2024-10-12 21:44:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:25,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:25,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:26,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:26,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:26,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:26,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170916326] [2024-10-12 21:44:26,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170916326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:26,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564834362] [2024-10-12 21:44:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:26,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:26,056 INFO L87 Difference]: Start difference. First operand 3333 states and 4170 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:28,514 INFO L93 Difference]: Finished difference Result 4274 states and 5718 transitions. [2024-10-12 21:44:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:28,527 INFO L225 Difference]: With dead ends: 4274 [2024-10-12 21:44:28,528 INFO L226 Difference]: Without dead ends: 3816 [2024-10-12 21:44:28,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:28,531 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 1228 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:28,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1221 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:44:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2024-10-12 21:44:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3549. [2024-10-12 21:44:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3549 states, 2750 states have (on average 1.298181818181818) internal successors, (3570), 2823 states have internal predecessors, (3570), 399 states have call successors, (399), 312 states have call predecessors, (399), 398 states have return successors, (544), 417 states have call predecessors, (544), 396 states have call successors, (544) [2024-10-12 21:44:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4513 transitions. [2024-10-12 21:44:29,178 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4513 transitions. Word has length 112 [2024-10-12 21:44:29,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:29,179 INFO L471 AbstractCegarLoop]: Abstraction has 3549 states and 4513 transitions. [2024-10-12 21:44:29,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4513 transitions. [2024-10-12 21:44:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:29,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:29,183 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] [2024-10-12 21:44:29,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:44:29,183 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:29,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1656227295, now seen corresponding path program 1 times [2024-10-12 21:44:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994488170] [2024-10-12 21:44:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:29,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:29,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994488170] [2024-10-12 21:44:29,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994488170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:29,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:29,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016128610] [2024-10-12 21:44:29,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:29,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:29,360 INFO L87 Difference]: Start difference. First operand 3549 states and 4513 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:31,853 INFO L93 Difference]: Finished difference Result 5087 states and 7039 transitions. [2024-10-12 21:44:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:31,871 INFO L225 Difference]: With dead ends: 5087 [2024-10-12 21:44:31,871 INFO L226 Difference]: Without dead ends: 4413 [2024-10-12 21:44:31,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:31,878 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 1173 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:31,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1655 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 21:44:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2024-10-12 21:44:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3982. [2024-10-12 21:44:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3137 states have (on average 1.3353522473700987) internal successors, (4189), 3212 states have internal predecessors, (4189), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2024-10-12 21:44:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5204 transitions. [2024-10-12 21:44:32,425 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5204 transitions. Word has length 112 [2024-10-12 21:44:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:32,426 INFO L471 AbstractCegarLoop]: Abstraction has 3982 states and 5204 transitions. [2024-10-12 21:44:32,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5204 transitions. [2024-10-12 21:44:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:32,430 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:32,430 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:44:32,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:44:32,432 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:32,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:32,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1019765087, now seen corresponding path program 1 times [2024-10-12 21:44:32,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:32,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980411014] [2024-10-12 21:44:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:32,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980411014] [2024-10-12 21:44:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980411014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:32,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857324441] [2024-10-12 21:44:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:32,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:32,601 INFO L87 Difference]: Start difference. First operand 3982 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:34,338 INFO L93 Difference]: Finished difference Result 5508 states and 7721 transitions. [2024-10-12 21:44:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:34,355 INFO L225 Difference]: With dead ends: 5508 [2024-10-12 21:44:34,355 INFO L226 Difference]: Without dead ends: 4401 [2024-10-12 21:44:34,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:34,363 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1062 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:34,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 790 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 21:44:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2024-10-12 21:44:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3982. [2024-10-12 21:44:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3137 states have (on average 1.3337583678673892) internal successors, (4184), 3212 states have internal predecessors, (4184), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2024-10-12 21:44:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5199 transitions. [2024-10-12 21:44:35,019 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5199 transitions. Word has length 112 [2024-10-12 21:44:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:35,019 INFO L471 AbstractCegarLoop]: Abstraction has 3982 states and 5199 transitions. [2024-10-12 21:44:35,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5199 transitions. [2024-10-12 21:44:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:35,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:35,024 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] [2024-10-12 21:44:35,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:44:35,024 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:35,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash 136256097, now seen corresponding path program 1 times [2024-10-12 21:44:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:35,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485599660] [2024-10-12 21:44:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:35,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485599660] [2024-10-12 21:44:35,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485599660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:35,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:35,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:35,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485627713] [2024-10-12 21:44:35,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:35,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:35,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:35,178 INFO L87 Difference]: Start difference. First operand 3982 states and 5199 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:37,130 INFO L93 Difference]: Finished difference Result 5497 states and 7685 transitions. [2024-10-12 21:44:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:37,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:37,147 INFO L225 Difference]: With dead ends: 5497 [2024-10-12 21:44:37,147 INFO L226 Difference]: Without dead ends: 4390 [2024-10-12 21:44:37,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:37,152 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1058 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:37,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 790 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 21:44:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2024-10-12 21:44:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 3982. [2024-10-12 21:44:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3137 states have (on average 1.3321644883646797) internal successors, (4179), 3212 states have internal predecessors, (4179), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2024-10-12 21:44:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5194 transitions. [2024-10-12 21:44:37,901 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5194 transitions. Word has length 112 [2024-10-12 21:44:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:37,902 INFO L471 AbstractCegarLoop]: Abstraction has 3982 states and 5194 transitions. [2024-10-12 21:44:37,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5194 transitions. [2024-10-12 21:44:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:37,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:37,906 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] [2024-10-12 21:44:37,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:44:37,906 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:37,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1804325917, now seen corresponding path program 1 times [2024-10-12 21:44:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112250938] [2024-10-12 21:44:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:37,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:37,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:38,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:38,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:38,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:38,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:38,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:38,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112250938] [2024-10-12 21:44:38,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112250938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:38,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:38,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470752912] [2024-10-12 21:44:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:38,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:38,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:38,092 INFO L87 Difference]: Start difference. First operand 3982 states and 5194 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:40,797 INFO L93 Difference]: Finished difference Result 6631 states and 9488 transitions. [2024-10-12 21:44:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 21:44:40,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:40,815 INFO L225 Difference]: With dead ends: 6631 [2024-10-12 21:44:40,815 INFO L226 Difference]: Without dead ends: 5524 [2024-10-12 21:44:40,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-12 21:44:40,820 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 1156 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:40,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1655 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 21:44:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2024-10-12 21:44:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 4863. [2024-10-12 21:44:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 3926 states have (on average 1.3830871115639327) internal successors, (5430), 4005 states have internal predecessors, (5430), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2024-10-12 21:44:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6595 transitions. [2024-10-12 21:44:41,553 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6595 transitions. Word has length 112 [2024-10-12 21:44:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:41,553 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 6595 transitions. [2024-10-12 21:44:41,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:41,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6595 transitions. [2024-10-12 21:44:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:41,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:41,559 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] [2024-10-12 21:44:41,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:44:41,559 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:41,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:41,559 INFO L85 PathProgramCache]: Analyzing trace with hash 72737313, now seen corresponding path program 1 times [2024-10-12 21:44:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:41,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300218555] [2024-10-12 21:44:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:41,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300218555] [2024-10-12 21:44:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300218555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:41,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324936971] [2024-10-12 21:44:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:41,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:41,713 INFO L87 Difference]: Start difference. First operand 4863 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:43,263 INFO L93 Difference]: Finished difference Result 7515 states and 10922 transitions. [2024-10-12 21:44:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:43,287 INFO L225 Difference]: With dead ends: 7515 [2024-10-12 21:44:43,288 INFO L226 Difference]: Without dead ends: 5527 [2024-10-12 21:44:43,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:43,297 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1057 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:43,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 790 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 21:44:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2024-10-12 21:44:44,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 4863. [2024-10-12 21:44:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 3926 states have (on average 1.380794701986755) internal successors, (5421), 4005 states have internal predecessors, (5421), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2024-10-12 21:44:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6586 transitions. [2024-10-12 21:44:44,020 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6586 transitions. Word has length 112 [2024-10-12 21:44:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:44,020 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 6586 transitions. [2024-10-12 21:44:44,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6586 transitions. [2024-10-12 21:44:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:44,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:44,024 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] [2024-10-12 21:44:44,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 21:44:44,025 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:44,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:44,025 INFO L85 PathProgramCache]: Analyzing trace with hash -697996253, now seen corresponding path program 1 times [2024-10-12 21:44:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351305472] [2024-10-12 21:44:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351305472] [2024-10-12 21:44:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351305472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:44,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:44,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:44,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225816320] [2024-10-12 21:44:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:44,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:44,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:44,180 INFO L87 Difference]: Start difference. First operand 4863 states and 6586 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:47,351 INFO L93 Difference]: Finished difference Result 10482 states and 15635 transitions. [2024-10-12 21:44:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:47,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:47,383 INFO L225 Difference]: With dead ends: 10482 [2024-10-12 21:44:47,384 INFO L226 Difference]: Without dead ends: 8494 [2024-10-12 21:44:47,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:47,395 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 1213 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:47,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1648 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 21:44:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8494 states. [2024-10-12 21:44:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8494 to 6619. [2024-10-12 21:44:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 5506 states have (on average 1.4375227025063566) internal successors, (7915), 5593 states have internal predecessors, (7915), 615 states have call successors, (615), 396 states have call predecessors, (615), 496 states have return successors, (852), 647 states have call predecessors, (852), 612 states have call successors, (852) [2024-10-12 21:44:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9382 transitions. [2024-10-12 21:44:48,288 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9382 transitions. Word has length 112 [2024-10-12 21:44:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:48,288 INFO L471 AbstractCegarLoop]: Abstraction has 6619 states and 9382 transitions. [2024-10-12 21:44:48,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9382 transitions. [2024-10-12 21:44:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:48,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:48,293 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] [2024-10-12 21:44:48,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 21:44:48,294 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:48,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1692689951, now seen corresponding path program 1 times [2024-10-12 21:44:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479155217] [2024-10-12 21:44:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:48,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:48,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479155217] [2024-10-12 21:44:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479155217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:48,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:48,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053543494] [2024-10-12 21:44:48,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:48,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:48,454 INFO L87 Difference]: Start difference. First operand 6619 states and 9382 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:51,345 INFO L93 Difference]: Finished difference Result 17240 states and 26521 transitions. [2024-10-12 21:44:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:51,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:51,389 INFO L225 Difference]: With dead ends: 17240 [2024-10-12 21:44:51,389 INFO L226 Difference]: Without dead ends: 13496 [2024-10-12 21:44:51,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:51,404 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 1432 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:51,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1201 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:44:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13496 states. [2024-10-12 21:44:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13496 to 9968. [2024-10-12 21:44:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 8511 states have (on average 1.483374456585595) internal successors, (12625), 8614 states have internal predecessors, (12625), 847 states have call successors, (847), 492 states have call predecessors, (847), 608 states have return successors, (1262), 895 states have call predecessors, (1262), 844 states have call successors, (1262) [2024-10-12 21:44:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14734 transitions. [2024-10-12 21:44:52,455 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14734 transitions. Word has length 112 [2024-10-12 21:44:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:52,456 INFO L471 AbstractCegarLoop]: Abstraction has 9968 states and 14734 transitions. [2024-10-12 21:44:52,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14734 transitions. [2024-10-12 21:44:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:52,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:52,463 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] [2024-10-12 21:44:52,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 21:44:52,463 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:52,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2016001123, now seen corresponding path program 1 times [2024-10-12 21:44:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357268569] [2024-10-12 21:44:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:52,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:52,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357268569] [2024-10-12 21:44:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357268569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:52,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:52,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910481640] [2024-10-12 21:44:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:52,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:52,600 INFO L87 Difference]: Start difference. First operand 9968 states and 14734 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:54,455 INFO L93 Difference]: Finished difference Result 19167 states and 29779 transitions. [2024-10-12 21:44:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:44:54,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:54,492 INFO L225 Difference]: With dead ends: 19167 [2024-10-12 21:44:54,492 INFO L226 Difference]: Without dead ends: 12074 [2024-10-12 21:44:54,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:44:54,516 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1055 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:54,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 789 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 21:44:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12074 states. [2024-10-12 21:44:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12074 to 9968. [2024-10-12 21:44:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 8511 states have (on average 1.4794971213723416) internal successors, (12592), 8614 states have internal predecessors, (12592), 847 states have call successors, (847), 492 states have call predecessors, (847), 608 states have return successors, (1262), 895 states have call predecessors, (1262), 844 states have call successors, (1262) [2024-10-12 21:44:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14701 transitions. [2024-10-12 21:44:55,681 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14701 transitions. Word has length 112 [2024-10-12 21:44:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:44:55,681 INFO L471 AbstractCegarLoop]: Abstraction has 9968 states and 14701 transitions. [2024-10-12 21:44:55,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14701 transitions. [2024-10-12 21:44:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:44:55,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:44:55,688 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] [2024-10-12 21:44:55,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 21:44:55,688 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:44:55,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:44:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash 57426337, now seen corresponding path program 1 times [2024-10-12 21:44:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:44:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219718271] [2024-10-12 21:44:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:44:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:44:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:44:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:44:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:44:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:44:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:44:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:44:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:44:55,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:44:55,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219718271] [2024-10-12 21:44:55,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219718271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:44:55,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:44:55,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:44:55,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168128378] [2024-10-12 21:44:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:44:55,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:44:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:44:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:44:55,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:44:55,847 INFO L87 Difference]: Start difference. First operand 9968 states and 14701 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:44:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:44:59,607 INFO L93 Difference]: Finished difference Result 29633 states and 46419 transitions. [2024-10-12 21:44:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 21:44:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-10-12 21:44:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:44:59,689 INFO L225 Difference]: With dead ends: 29633 [2024-10-12 21:44:59,689 INFO L226 Difference]: Without dead ends: 22540 [2024-10-12 21:44:59,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-12 21:44:59,709 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 1299 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:44:59,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1648 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 21:44:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22540 states. [2024-10-12 21:45:01,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22540 to 16858. [2024-10-12 21:45:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16858 states, 14729 states have (on average 1.516192545318759) internal successors, (22332), 14864 states have internal predecessors, (22332), 1295 states have call successors, (1295), 684 states have call predecessors, (1295), 832 states have return successors, (2228), 1375 states have call predecessors, (2228), 1292 states have call successors, (2228) [2024-10-12 21:45:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16858 states to 16858 states and 25855 transitions. [2024-10-12 21:45:01,411 INFO L78 Accepts]: Start accepts. Automaton has 16858 states and 25855 transitions. Word has length 112 [2024-10-12 21:45:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:45:01,411 INFO L471 AbstractCegarLoop]: Abstraction has 16858 states and 25855 transitions. [2024-10-12 21:45:01,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 21:45:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16858 states and 25855 transitions. [2024-10-12 21:45:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 21:45:01,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:45:01,420 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] [2024-10-12 21:45:01,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:45:01,420 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:45:01,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:45:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1933909155, now seen corresponding path program 1 times [2024-10-12 21:45:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:45:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479428698] [2024-10-12 21:45:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:45:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:45:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 21:45:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-12 21:45:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 21:45:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-12 21:45:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-12 21:45:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:45:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:45:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:45:01,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479428698] [2024-10-12 21:45:01,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479428698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:45:01,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:45:01,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:45:01,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945180659] [2024-10-12 21:45:01,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:45:01,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:45:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:45:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:45:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:45:01,566 INFO L87 Difference]: Start difference. First operand 16858 states and 25855 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)