./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 04:05:57,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 04:05:57,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 04:05:57,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 04:05:57,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 04:05:57,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 04:05:57,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 04:05:57,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 04:05:57,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 04:05:57,897 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 04:05:57,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 04:05:57,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 04:05:57,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 04:05:57,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 04:05:57,898 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 04:05:57,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 04:05:57,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 04:05:57,899 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 04:05:57,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 04:05:57,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 04:05:57,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 04:05:57,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 04:05:57,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 04:05:57,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 04:05:57,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 04:05:57,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 04:05:57,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 04:05:57,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 04:05:57,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 04:05:57,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 04:05:57,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 04:05:57,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 04:05:57,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:05:57,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 04:05:57,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 04:05:57,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 04:05:57,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 04:05:57,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 04:05:57,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 04:05:57,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 04:05:57,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 04:05:57,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 04:05:57,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f [2024-11-22 04:05:58,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 04:05:58,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 04:05:58,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 04:05:58,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 04:05:58,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 04:05:58,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-22 04:05:59,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 04:05:59,730 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 04:05:59,731 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-22 04:05:59,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136f33897/3196593c6e804ae695f73dd4eddea436/FLAG43786e7d9 [2024-11-22 04:05:59,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136f33897/3196593c6e804ae695f73dd4eddea436 [2024-11-22 04:05:59,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 04:05:59,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 04:05:59,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 04:05:59,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 04:05:59,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 04:05:59,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f108a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:05:59, skipping insertion in model container [2024-11-22 04:05:59,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:05:59" (1/1) ... [2024-11-22 04:05:59,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 04:06:00,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2024-11-22 04:06:00,085 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2024-11-22 04:06:00,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:06:00,181 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 04:06:00,202 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2024-11-22 04:06:00,236 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2024-11-22 04:06:00,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 04:06:00,382 INFO L204 MainTranslator]: Completed translation [2024-11-22 04:06:00,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00 WrapperNode [2024-11-22 04:06:00,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 04:06:00,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 04:06:00,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 04:06:00,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 04:06:00,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,488 INFO L138 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 954 [2024-11-22 04:06:00,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 04:06:00,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 04:06:00,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 04:06:00,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 04:06:00,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,537 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 04:06:00,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 04:06:00,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 04:06:00,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 04:06:00,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 04:06:00,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (1/1) ... [2024-11-22 04:06:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 04:06:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:00,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 04:06:00,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 04:06:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 04:06:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 04:06:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 04:06:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-22 04:06:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-22 04:06:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-22 04:06:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-22 04:06:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-22 04:06:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-22 04:06:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-22 04:06:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-22 04:06:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-22 04:06:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-22 04:06:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-22 04:06:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-22 04:06:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-22 04:06:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-22 04:06:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-22 04:06:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-22 04:06:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-22 04:06:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-22 04:06:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-22 04:06:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-22 04:06:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 04:06:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-22 04:06:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-22 04:06:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-22 04:06:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-22 04:06:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 04:06:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 04:06:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-22 04:06:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-22 04:06:00,631 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-22 04:06:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-22 04:06:00,726 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 04:06:00,728 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 04:06:01,479 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-22 04:06:01,480 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 04:06:01,522 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 04:06:01,523 INFO L316 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-22 04:06:01,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:01 BoogieIcfgContainer [2024-11-22 04:06:01,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 04:06:01,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 04:06:01,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 04:06:01,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 04:06:01,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:05:59" (1/3) ... [2024-11-22 04:06:01,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df43387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:01, skipping insertion in model container [2024-11-22 04:06:01,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:00" (2/3) ... [2024-11-22 04:06:01,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df43387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:01, skipping insertion in model container [2024-11-22 04:06:01,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:01" (3/3) ... [2024-11-22 04:06:01,529 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-22 04:06:01,541 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 04:06:01,542 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 04:06:01,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 04:06:01,608 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;@5fc960bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 04:06:01,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 04:06:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 394 states have (on average 1.619289340101523) internal successors, (638), 402 states have internal predecessors, (638), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 04:06:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:01,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:01,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:01,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:01,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:01,630 INFO L85 PathProgramCache]: Analyzing trace with hash 502371416, now seen corresponding path program 1 times [2024-11-22 04:06:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795522276] [2024-11-22 04:06:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795522276] [2024-11-22 04:06:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795522276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:01,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436052559] [2024-11-22 04:06:01,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:01,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:01,986 INFO L87 Difference]: Start difference. First operand has 452 states, 394 states have (on average 1.619289340101523) internal successors, (638), 402 states have internal predecessors, (638), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:02,913 INFO L93 Difference]: Finished difference Result 980 states and 1552 transitions. [2024-11-22 04:06:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:02,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:06:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:02,933 INFO L225 Difference]: With dead ends: 980 [2024-11-22 04:06:02,933 INFO L226 Difference]: Without dead ends: 544 [2024-11-22 04:06:02,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:02,940 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 441 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:02,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1462 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-22 04:06:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 537. [2024-11-22 04:06:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 462 states have (on average 1.5086580086580086) internal successors, (697), 469 states have internal predecessors, (697), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-22 04:06:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 800 transitions. [2024-11-22 04:06:03,003 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 800 transitions. Word has length 65 [2024-11-22 04:06:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:03,004 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 800 transitions. [2024-11-22 04:06:03,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 800 transitions. [2024-11-22 04:06:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:03,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:03,007 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:03,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 04:06:03,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:03,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:03,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2113707240, now seen corresponding path program 1 times [2024-11-22 04:06:03,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216058533] [2024-11-22 04:06:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:03,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216058533] [2024-11-22 04:06:03,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216058533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:03,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:03,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248762019] [2024-11-22 04:06:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:03,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:03,172 INFO L87 Difference]: Start difference. First operand 537 states and 800 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:04,012 INFO L93 Difference]: Finished difference Result 854 states and 1231 transitions. [2024-11-22 04:06:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:06:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:04,021 INFO L225 Difference]: With dead ends: 854 [2024-11-22 04:06:04,021 INFO L226 Difference]: Without dead ends: 677 [2024-11-22 04:06:04,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:04,023 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 952 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:04,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1656 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-22 04:06:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 633. [2024-11-22 04:06:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 538 states have (on average 1.4888475836431228) internal successors, (801), 547 states have internal predecessors, (801), 62 states have call successors, (62), 29 states have call predecessors, (62), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2024-11-22 04:06:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 934 transitions. [2024-11-22 04:06:04,088 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 934 transitions. Word has length 65 [2024-11-22 04:06:04,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:04,089 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 934 transitions. [2024-11-22 04:06:04,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:04,089 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 934 transitions. [2024-11-22 04:06:04,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:04,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:04,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:04,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 04:06:04,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:04,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 152673946, now seen corresponding path program 1 times [2024-11-22 04:06:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286142796] [2024-11-22 04:06:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:04,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286142796] [2024-11-22 04:06:04,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286142796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:04,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:04,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117959648] [2024-11-22 04:06:04,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:04,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,219 INFO L87 Difference]: Start difference. First operand 633 states and 934 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:04,261 INFO L93 Difference]: Finished difference Result 905 states and 1307 transitions. [2024-11-22 04:06:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-22 04:06:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:04,266 INFO L225 Difference]: With dead ends: 905 [2024-11-22 04:06:04,266 INFO L226 Difference]: Without dead ends: 638 [2024-11-22 04:06:04,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,269 INFO L432 NwaCegarLoop]: 665 mSDtfsCounter, 0 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:04,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3320 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-22 04:06:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2024-11-22 04:06:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 542 states have (on average 1.481549815498155) internal successors, (803), 551 states have internal predecessors, (803), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2024-11-22 04:06:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 937 transitions. [2024-11-22 04:06:04,307 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 937 transitions. Word has length 65 [2024-11-22 04:06:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:04,307 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 937 transitions. [2024-11-22 04:06:04,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 937 transitions. [2024-11-22 04:06:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:04,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:04,311 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:04,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 04:06:04,312 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -876685352, now seen corresponding path program 1 times [2024-11-22 04:06:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522439177] [2024-11-22 04:06:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:04,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522439177] [2024-11-22 04:06:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522439177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:04,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464729302] [2024-11-22 04:06:04,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:04,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:04,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,403 INFO L87 Difference]: Start difference. First operand 638 states and 937 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:04,443 INFO L93 Difference]: Finished difference Result 925 states and 1325 transitions. [2024-11-22 04:06:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2024-11-22 04:06:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:04,449 INFO L225 Difference]: With dead ends: 925 [2024-11-22 04:06:04,450 INFO L226 Difference]: Without dead ends: 653 [2024-11-22 04:06:04,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,452 INFO L432 NwaCegarLoop]: 665 mSDtfsCounter, 0 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:04,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3320 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-22 04:06:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2024-11-22 04:06:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 554 states have (on average 1.4711191335740073) internal successors, (815), 563 states have internal predecessors, (815), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2024-11-22 04:06:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 952 transitions. [2024-11-22 04:06:04,488 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 952 transitions. Word has length 65 [2024-11-22 04:06:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:04,489 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 952 transitions. [2024-11-22 04:06:04,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 952 transitions. [2024-11-22 04:06:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:04,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:04,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:04,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 04:06:04,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:04,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 509518042, now seen corresponding path program 1 times [2024-11-22 04:06:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572645895] [2024-11-22 04:06:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:04,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572645895] [2024-11-22 04:06:04,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572645895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:04,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:04,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:04,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994134260] [2024-11-22 04:06:04,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:04,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:04,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:04,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:04,633 INFO L87 Difference]: Start difference. First operand 653 states and 952 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:05,423 INFO L93 Difference]: Finished difference Result 1024 states and 1433 transitions. [2024-11-22 04:06:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 04:06:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:06:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:05,428 INFO L225 Difference]: With dead ends: 1024 [2024-11-22 04:06:05,428 INFO L226 Difference]: Without dead ends: 739 [2024-11-22 04:06:05,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 04:06:05,429 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 966 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:05,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1488 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-22 04:06:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 665. [2024-11-22 04:06:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 564 states have (on average 1.4627659574468086) internal successors, (825), 573 states have internal predecessors, (825), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2024-11-22 04:06:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 962 transitions. [2024-11-22 04:06:05,454 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 962 transitions. Word has length 65 [2024-11-22 04:06:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:05,454 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 962 transitions. [2024-11-22 04:06:05,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 962 transitions. [2024-11-22 04:06:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-22 04:06:05,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:05,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:05,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 04:06:05,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:05,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 375504536, now seen corresponding path program 1 times [2024-11-22 04:06:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:05,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402408230] [2024-11-22 04:06:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:05,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:05,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402408230] [2024-11-22 04:06:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402408230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:05,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:06:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256125753] [2024-11-22 04:06:05,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:05,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:06:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:06:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:06:05,518 INFO L87 Difference]: Start difference. First operand 665 states and 962 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,137 INFO L93 Difference]: Finished difference Result 1255 states and 1738 transitions. [2024-11-22 04:06:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 04:06:06,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-22 04:06:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,142 INFO L225 Difference]: With dead ends: 1255 [2024-11-22 04:06:06,143 INFO L226 Difference]: Without dead ends: 959 [2024-11-22 04:06:06,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:06,146 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 925 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 743 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-22 04:06:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 955. [2024-11-22 04:06:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 788 states have (on average 1.4111675126903553) internal successors, (1112), 804 states have internal predecessors, (1112), 98 states have call successors, (98), 52 states have call predecessors, (98), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2024-11-22 04:06:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1341 transitions. [2024-11-22 04:06:06,185 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1341 transitions. Word has length 65 [2024-11-22 04:06:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,185 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1341 transitions. [2024-11-22 04:06:06,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 04:06:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1341 transitions. [2024-11-22 04:06:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:06:06,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,187 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:06,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 04:06:06,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash -561620740, now seen corresponding path program 1 times [2024-11-22 04:06:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278247424] [2024-11-22 04:06:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278247424] [2024-11-22 04:06:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278247424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984682842] [2024-11-22 04:06:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,234 INFO L87 Difference]: Start difference. First operand 955 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,328 INFO L93 Difference]: Finished difference Result 2066 states and 2800 transitions. [2024-11-22 04:06:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-22 04:06:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,336 INFO L225 Difference]: With dead ends: 2066 [2024-11-22 04:06:06,336 INFO L226 Difference]: Without dead ends: 1459 [2024-11-22 04:06:06,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,340 INFO L432 NwaCegarLoop]: 664 mSDtfsCounter, 103 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1297 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2024-11-22 04:06:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1436. [2024-11-22 04:06:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1167 states have (on average 1.365038560411311) internal successors, (1593), 1186 states have internal predecessors, (1593), 143 states have call successors, (143), 96 states have call predecessors, (143), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2024-11-22 04:06:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1939 transitions. [2024-11-22 04:06:06,406 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1939 transitions. Word has length 66 [2024-11-22 04:06:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,407 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 1939 transitions. [2024-11-22 04:06:06,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1939 transitions. [2024-11-22 04:06:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 04:06:06,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:06,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 04:06:06,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 896618919, now seen corresponding path program 1 times [2024-11-22 04:06:06,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560156127] [2024-11-22 04:06:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560156127] [2024-11-22 04:06:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560156127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216521553] [2024-11-22 04:06:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,438 INFO L87 Difference]: Start difference. First operand 1436 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,536 INFO L93 Difference]: Finished difference Result 3464 states and 4556 transitions. [2024-11-22 04:06:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-22 04:06:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,547 INFO L225 Difference]: With dead ends: 3464 [2024-11-22 04:06:06,547 INFO L226 Difference]: Without dead ends: 2396 [2024-11-22 04:06:06,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,551 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 637 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 774 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2024-11-22 04:06:06,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2298. [2024-11-22 04:06:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 1833 states have (on average 1.320240043644299) internal successors, (2420), 1862 states have internal predecessors, (2420), 241 states have call successors, (241), 180 states have call predecessors, (241), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2024-11-22 04:06:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3000 transitions. [2024-11-22 04:06:06,709 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3000 transitions. Word has length 66 [2024-11-22 04:06:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:06,710 INFO L471 AbstractCegarLoop]: Abstraction has 2298 states and 3000 transitions. [2024-11-22 04:06:06,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3000 transitions. [2024-11-22 04:06:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 04:06:06,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:06,713 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] [2024-11-22 04:06:06,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 04:06:06,713 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:06,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 717729595, now seen corresponding path program 1 times [2024-11-22 04:06:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:06,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53088156] [2024-11-22 04:06:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53088156] [2024-11-22 04:06:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53088156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220193173] [2024-11-22 04:06:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:06,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,753 INFO L87 Difference]: Start difference. First operand 2298 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:06,854 INFO L93 Difference]: Finished difference Result 5000 states and 6414 transitions. [2024-11-22 04:06:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:06,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-22 04:06:06,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:06,864 INFO L225 Difference]: With dead ends: 5000 [2024-11-22 04:06:06,864 INFO L226 Difference]: Without dead ends: 3070 [2024-11-22 04:06:06,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:06,868 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 637 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:06,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 789 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2024-11-22 04:06:07,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 3030. [2024-11-22 04:06:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2401 states have (on average 1.301124531445231) internal successors, (3124), 2438 states have internal predecessors, (3124), 321 states have call successors, (321), 250 states have call predecessors, (321), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2024-11-22 04:06:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3893 transitions. [2024-11-22 04:06:07,028 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3893 transitions. Word has length 72 [2024-11-22 04:06:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:07,030 INFO L471 AbstractCegarLoop]: Abstraction has 3030 states and 3893 transitions. [2024-11-22 04:06:07,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 04:06:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3893 transitions. [2024-11-22 04:06:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 04:06:07,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:07,032 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:07,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 04:06:07,032 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:07,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 257959606, now seen corresponding path program 1 times [2024-11-22 04:06:07,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:07,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207104683] [2024-11-22 04:06:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207104683] [2024-11-22 04:06:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207104683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:07,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:07,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 04:06:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240227082] [2024-11-22 04:06:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:07,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 04:06:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 04:06:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 04:06:07,092 INFO L87 Difference]: Start difference. First operand 3030 states and 3893 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:07,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:07,354 INFO L93 Difference]: Finished difference Result 3561 states and 4548 transitions. [2024-11-22 04:06:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2024-11-22 04:06:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:07,367 INFO L225 Difference]: With dead ends: 3561 [2024-11-22 04:06:07,367 INFO L226 Difference]: Without dead ends: 3558 [2024-11-22 04:06:07,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:07,368 INFO L432 NwaCegarLoop]: 678 mSDtfsCounter, 1247 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:07,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 768 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 04:06:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2024-11-22 04:06:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3524. [2024-11-22 04:06:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 2786 states have (on average 1.2907394113424264) internal successors, (3596), 2828 states have internal predecessors, (3596), 371 states have call successors, (371), 294 states have call predecessors, (371), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2024-11-22 04:06:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 4494 transitions. [2024-11-22 04:06:07,518 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 4494 transitions. Word has length 73 [2024-11-22 04:06:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:07,518 INFO L471 AbstractCegarLoop]: Abstraction has 3524 states and 4494 transitions. [2024-11-22 04:06:07,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 4494 transitions. [2024-11-22 04:06:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 04:06:07,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:07,520 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:07,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 04:06:07,520 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:07,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash -594512155, now seen corresponding path program 1 times [2024-11-22 04:06:07,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:07,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897159602] [2024-11-22 04:06:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:07,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897159602] [2024-11-22 04:06:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897159602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:06:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680474124] [2024-11-22 04:06:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:07,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:06:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:07,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:06:07,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 04:06:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:07,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 04:06:07,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:06:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:07,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:06:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680474124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:06:08,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:06:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-22 04:06:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354880128] [2024-11-22 04:06:08,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:06:08,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:06:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:06:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:08,058 INFO L87 Difference]: Start difference. First operand 3524 states and 4494 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:06:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:08,796 INFO L93 Difference]: Finished difference Result 7405 states and 9348 transitions. [2024-11-22 04:06:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 04:06:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2024-11-22 04:06:08,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:08,823 INFO L225 Difference]: With dead ends: 7405 [2024-11-22 04:06:08,824 INFO L226 Difference]: Without dead ends: 7402 [2024-11-22 04:06:08,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:08,827 INFO L432 NwaCegarLoop]: 858 mSDtfsCounter, 1580 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:08,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 3062 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7402 states. [2024-11-22 04:06:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7402 to 5314. [2024-11-22 04:06:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 4190 states have (on average 1.2821002386634845) internal successors, (5372), 4254 states have internal predecessors, (5372), 555 states have call successors, (555), 452 states have call predecessors, (555), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2024-11-22 04:06:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 6732 transitions. [2024-11-22 04:06:09,154 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 6732 transitions. Word has length 74 [2024-11-22 04:06:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:09,155 INFO L471 AbstractCegarLoop]: Abstraction has 5314 states and 6732 transitions. [2024-11-22 04:06:09,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 04:06:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 6732 transitions. [2024-11-22 04:06:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 04:06:09,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:09,157 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:09,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 04:06:09,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 04:06:09,358 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:09,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -180849418, now seen corresponding path program 2 times [2024-11-22 04:06:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:09,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636531395] [2024-11-22 04:06:09,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 04:06:09,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:09,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 04:06:09,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 04:06:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:09,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:09,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636531395] [2024-11-22 04:06:09,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636531395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:09,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:09,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:09,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36381847] [2024-11-22 04:06:09,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:09,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:09,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:09,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:09,404 INFO L87 Difference]: Start difference. First operand 5314 states and 6732 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:09,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:09,698 INFO L93 Difference]: Finished difference Result 7781 states and 9861 transitions. [2024-11-22 04:06:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:09,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-11-22 04:06:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:09,714 INFO L225 Difference]: With dead ends: 7781 [2024-11-22 04:06:09,714 INFO L226 Difference]: Without dead ends: 3706 [2024-11-22 04:06:09,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:09,723 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 636 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:09,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 869 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:09,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2024-11-22 04:06:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3686. [2024-11-22 04:06:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 2918 states have (on average 1.2721041809458533) internal successors, (3712), 2960 states have internal predecessors, (3712), 387 states have call successors, (387), 308 states have call predecessors, (387), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2024-11-22 04:06:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4630 transitions. [2024-11-22 04:06:09,956 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4630 transitions. Word has length 77 [2024-11-22 04:06:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:09,956 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 4630 transitions. [2024-11-22 04:06:09,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-22 04:06:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4630 transitions. [2024-11-22 04:06:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 04:06:09,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:09,959 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:09,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 04:06:09,959 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:09,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash -987497993, now seen corresponding path program 1 times [2024-11-22 04:06:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975984729] [2024-11-22 04:06:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:09,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 04:06:10,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:10,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975984729] [2024-11-22 04:06:10,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975984729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:10,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:10,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:10,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617220321] [2024-11-22 04:06:10,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:10,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:10,081 INFO L87 Difference]: Start difference. First operand 3686 states and 4630 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:11,844 INFO L93 Difference]: Finished difference Result 10538 states and 13027 transitions. [2024-11-22 04:06:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 04:06:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2024-11-22 04:06:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:11,892 INFO L225 Difference]: With dead ends: 10538 [2024-11-22 04:06:11,892 INFO L226 Difference]: Without dead ends: 5915 [2024-11-22 04:06:11,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-22 04:06:11,909 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 728 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:11,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 1920 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 04:06:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2024-11-22 04:06:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 5658. [2024-11-22 04:06:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 4438 states have (on average 1.2406489409643984) internal successors, (5506), 4516 states have internal predecessors, (5506), 596 states have call successors, (596), 490 states have call predecessors, (596), 622 states have return successors, (887), 658 states have call predecessors, (887), 593 states have call successors, (887) [2024-11-22 04:06:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 6989 transitions. [2024-11-22 04:06:12,376 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 6989 transitions. Word has length 84 [2024-11-22 04:06:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:12,376 INFO L471 AbstractCegarLoop]: Abstraction has 5658 states and 6989 transitions. [2024-11-22 04:06:12,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 6989 transitions. [2024-11-22 04:06:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 04:06:12,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:12,380 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:12,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 04:06:12,381 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:12,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash -675223884, now seen corresponding path program 1 times [2024-11-22 04:06:12,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:12,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273482662] [2024-11-22 04:06:12,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 04:06:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273482662] [2024-11-22 04:06:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273482662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 04:06:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11974287] [2024-11-22 04:06:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:12,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 04:06:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 04:06:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:12,484 INFO L87 Difference]: Start difference. First operand 5658 states and 6989 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:14,139 INFO L93 Difference]: Finished difference Result 9682 states and 11872 transitions. [2024-11-22 04:06:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 04:06:14,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-22 04:06:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:14,163 INFO L225 Difference]: With dead ends: 9682 [2024-11-22 04:06:14,163 INFO L226 Difference]: Without dead ends: 5038 [2024-11-22 04:06:14,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-22 04:06:14,171 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 1568 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:14,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1995 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 04:06:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2024-11-22 04:06:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 4757. [2024-11-22 04:06:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 3743 states have (on average 1.2353726956986375) internal successors, (4624), 3804 states have internal predecessors, (4624), 500 states have call successors, (500), 405 states have call predecessors, (500), 512 states have return successors, (675), 554 states have call predecessors, (675), 497 states have call successors, (675) [2024-11-22 04:06:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 5799 transitions. [2024-11-22 04:06:14,415 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 5799 transitions. Word has length 93 [2024-11-22 04:06:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:14,415 INFO L471 AbstractCegarLoop]: Abstraction has 4757 states and 5799 transitions. [2024-11-22 04:06:14,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 04:06:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 5799 transitions. [2024-11-22 04:06:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 04:06:14,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:14,420 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:14,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 04:06:14,421 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:14,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1022091621, now seen corresponding path program 1 times [2024-11-22 04:06:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358247661] [2024-11-22 04:06:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-22 04:06:14,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358247661] [2024-11-22 04:06:14,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358247661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:06:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178743179] [2024-11-22 04:06:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:14,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:06:14,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:14,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:06:14,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 04:06:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:14,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 04:06:14,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:06:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 04:06:14,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 04:06:14,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178743179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:14,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 04:06:14,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-22 04:06:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416334746] [2024-11-22 04:06:14,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:14,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 04:06:14,694 INFO L87 Difference]: Start difference. First operand 4757 states and 5799 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 04:06:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:14,858 INFO L93 Difference]: Finished difference Result 6806 states and 8252 transitions. [2024-11-22 04:06:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:14,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-22 04:06:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:14,872 INFO L225 Difference]: With dead ends: 6806 [2024-11-22 04:06:14,873 INFO L226 Difference]: Without dead ends: 2421 [2024-11-22 04:06:14,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 04:06:14,880 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 0 mSDsluCounter, 2639 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:14,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3301 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2024-11-22 04:06:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2024-11-22 04:06:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1986 states have (on average 1.2527693856998994) internal successors, (2488), 2002 states have internal predecessors, (2488), 216 states have call successors, (216), 163 states have call predecessors, (216), 217 states have return successors, (296), 256 states have call predecessors, (296), 213 states have call successors, (296) [2024-11-22 04:06:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3000 transitions. [2024-11-22 04:06:14,993 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3000 transitions. Word has length 145 [2024-11-22 04:06:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:14,993 INFO L471 AbstractCegarLoop]: Abstraction has 2421 states and 3000 transitions. [2024-11-22 04:06:14,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 04:06:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3000 transitions. [2024-11-22 04:06:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 04:06:14,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:14,997 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:15,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 04:06:15,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 04:06:15,199 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:15,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:15,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1549286365, now seen corresponding path program 1 times [2024-11-22 04:06:15,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:15,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056635647] [2024-11-22 04:06:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-22 04:06:15,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:15,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056635647] [2024-11-22 04:06:15,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056635647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:15,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:15,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:15,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462791403] [2024-11-22 04:06:15,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:15,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:15,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:15,238 INFO L87 Difference]: Start difference. First operand 2421 states and 3000 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 04:06:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:15,318 INFO L93 Difference]: Finished difference Result 2424 states and 3002 transitions. [2024-11-22 04:06:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2024-11-22 04:06:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:15,328 INFO L225 Difference]: With dead ends: 2424 [2024-11-22 04:06:15,328 INFO L226 Difference]: Without dead ends: 1977 [2024-11-22 04:06:15,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:15,330 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 123 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:15,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1199 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-22 04:06:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2024-11-22 04:06:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1638 states have (on average 1.2698412698412698) internal successors, (2080), 1651 states have internal predecessors, (2080), 170 states have call successors, (170), 123 states have call predecessors, (170), 167 states have return successors, (233), 203 states have call predecessors, (233), 167 states have call successors, (233) [2024-11-22 04:06:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2483 transitions. [2024-11-22 04:06:15,424 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2483 transitions. Word has length 147 [2024-11-22 04:06:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:15,425 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2483 transitions. [2024-11-22 04:06:15,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-22 04:06:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2483 transitions. [2024-11-22 04:06:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 04:06:15,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:15,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:15,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 04:06:15,429 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:15,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:15,429 INFO L85 PathProgramCache]: Analyzing trace with hash 516682366, now seen corresponding path program 1 times [2024-11-22 04:06:15,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116180477] [2024-11-22 04:06:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:15,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-22 04:06:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116180477] [2024-11-22 04:06:15,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116180477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:15,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:15,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:15,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232319800] [2024-11-22 04:06:15,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:15,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:15,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:15,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:15,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:15,496 INFO L87 Difference]: Start difference. First operand 1977 states and 2483 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 04:06:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:16,234 INFO L93 Difference]: Finished difference Result 3404 states and 4227 transitions. [2024-11-22 04:06:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:16,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2024-11-22 04:06:16,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:16,246 INFO L225 Difference]: With dead ends: 3404 [2024-11-22 04:06:16,247 INFO L226 Difference]: Without dead ends: 2024 [2024-11-22 04:06:16,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 04:06:16,251 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 323 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:16,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1430 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:06:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2024-11-22 04:06:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1943. [2024-11-22 04:06:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1620 states have (on average 1.267283950617284) internal successors, (2053), 1635 states have internal predecessors, (2053), 164 states have call successors, (164), 121 states have call predecessors, (164), 157 states have return successors, (221), 187 states have call predecessors, (221), 161 states have call successors, (221) [2024-11-22 04:06:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2438 transitions. [2024-11-22 04:06:16,414 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2438 transitions. Word has length 159 [2024-11-22 04:06:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:16,415 INFO L471 AbstractCegarLoop]: Abstraction has 1943 states and 2438 transitions. [2024-11-22 04:06:16,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-22 04:06:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2438 transitions. [2024-11-22 04:06:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-22 04:06:16,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:16,419 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:16,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 04:06:16,419 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:16,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1456260360, now seen corresponding path program 1 times [2024-11-22 04:06:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:16,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051626292] [2024-11-22 04:06:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-22 04:06:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051626292] [2024-11-22 04:06:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051626292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 04:06:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231404940] [2024-11-22 04:06:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:16,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 04:06:16,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 04:06:16,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 04:06:16,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 04:06:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:16,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 04:06:16,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 04:06:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-22 04:06:17,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 04:06:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-22 04:06:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231404940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 04:06:17,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 04:06:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-22 04:06:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431378119] [2024-11-22 04:06:17,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 04:06:17,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 04:06:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 04:06:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-22 04:06:17,374 INFO L87 Difference]: Start difference. First operand 1943 states and 2438 transitions. Second operand has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-22 04:06:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:19,627 INFO L93 Difference]: Finished difference Result 4078 states and 5089 transitions. [2024-11-22 04:06:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 04:06:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2024-11-22 04:06:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:19,651 INFO L225 Difference]: With dead ends: 4078 [2024-11-22 04:06:19,655 INFO L226 Difference]: Without dead ends: 2585 [2024-11-22 04:06:19,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-22 04:06:19,664 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 1254 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:19,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 2604 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-22 04:06:19,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2024-11-22 04:06:19,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2398. [2024-11-22 04:06:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1955 states have (on average 1.236317135549872) internal successors, (2417), 1978 states have internal predecessors, (2417), 222 states have call successors, (222), 175 states have call predecessors, (222), 219 states have return successors, (339), 245 states have call predecessors, (339), 219 states have call successors, (339) [2024-11-22 04:06:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2978 transitions. [2024-11-22 04:06:20,011 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2978 transitions. Word has length 162 [2024-11-22 04:06:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:20,013 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 2978 transitions. [2024-11-22 04:06:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.76923076923077) internal successors, (244), 13 states have internal predecessors, (244), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-22 04:06:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2978 transitions. [2024-11-22 04:06:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:20,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:20,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:20,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 04:06:20,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 04:06:20,222 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:20,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -861561706, now seen corresponding path program 1 times [2024-11-22 04:06:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821291900] [2024-11-22 04:06:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821291900] [2024-11-22 04:06:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821291900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 04:06:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209497120] [2024-11-22 04:06:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 04:06:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 04:06:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:20,301 INFO L87 Difference]: Start difference. First operand 2398 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:20,548 INFO L93 Difference]: Finished difference Result 2733 states and 3498 transitions. [2024-11-22 04:06:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 04:06:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:20,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:20,561 INFO L225 Difference]: With dead ends: 2733 [2024-11-22 04:06:20,561 INFO L226 Difference]: Without dead ends: 2398 [2024-11-22 04:06:20,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 04:06:20,563 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 526 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:20,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 790 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 04:06:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2024-11-22 04:06:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2398. [2024-11-22 04:06:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1955 states have (on average 1.2358056265984654) internal successors, (2416), 1978 states have internal predecessors, (2416), 222 states have call successors, (222), 175 states have call predecessors, (222), 219 states have return successors, (339), 245 states have call predecessors, (339), 219 states have call successors, (339) [2024-11-22 04:06:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2977 transitions. [2024-11-22 04:06:20,686 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2977 transitions. Word has length 157 [2024-11-22 04:06:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:20,686 INFO L471 AbstractCegarLoop]: Abstraction has 2398 states and 2977 transitions. [2024-11-22 04:06:20,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2977 transitions. [2024-11-22 04:06:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:20,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:20,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:20,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 04:06:20,690 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:20,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1536426132, now seen corresponding path program 1 times [2024-11-22 04:06:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730881116] [2024-11-22 04:06:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:20,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730881116] [2024-11-22 04:06:20,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730881116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:20,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521121110] [2024-11-22 04:06:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:20,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:20,762 INFO L87 Difference]: Start difference. First operand 2398 states and 2977 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:21,352 INFO L93 Difference]: Finished difference Result 3092 states and 4069 transitions. [2024-11-22 04:06:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 04:06:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:21,362 INFO L225 Difference]: With dead ends: 3092 [2024-11-22 04:06:21,362 INFO L226 Difference]: Without dead ends: 2765 [2024-11-22 04:06:21,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:21,364 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1170 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:21,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1658 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 04:06:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2024-11-22 04:06:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2738. [2024-11-22 04:06:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2269 states have (on average 1.2829440282062583) internal successors, (2911), 2293 states have internal predecessors, (2911), 241 states have call successors, (241), 181 states have call predecessors, (241), 226 states have return successors, (359), 264 states have call predecessors, (359), 238 states have call successors, (359) [2024-11-22 04:06:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 3511 transitions. [2024-11-22 04:06:21,496 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 3511 transitions. Word has length 157 [2024-11-22 04:06:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:21,496 INFO L471 AbstractCegarLoop]: Abstraction has 2738 states and 3511 transitions. [2024-11-22 04:06:21,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 3511 transitions. [2024-11-22 04:06:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:21,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:21,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:21,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 04:06:21,502 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:21,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2092505968, now seen corresponding path program 1 times [2024-11-22 04:06:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837967783] [2024-11-22 04:06:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837967783] [2024-11-22 04:06:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837967783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:21,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121253232] [2024-11-22 04:06:21,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:21,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:21,591 INFO L87 Difference]: Start difference. First operand 2738 states and 3511 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:22,351 INFO L93 Difference]: Finished difference Result 3837 states and 5258 transitions. [2024-11-22 04:06:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:22,361 INFO L225 Difference]: With dead ends: 3837 [2024-11-22 04:06:22,361 INFO L226 Difference]: Without dead ends: 3170 [2024-11-22 04:06:22,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:22,364 INFO L432 NwaCegarLoop]: 775 mSDtfsCounter, 1175 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:22,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 3115 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2024-11-22 04:06:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3055. [2024-11-22 04:06:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 2560 states have (on average 1.3125) internal successors, (3360), 2585 states have internal predecessors, (3360), 260 states have call successors, (260), 187 states have call predecessors, (260), 233 states have return successors, (381), 284 states have call predecessors, (381), 257 states have call successors, (381) [2024-11-22 04:06:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 4001 transitions. [2024-11-22 04:06:22,564 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 4001 transitions. Word has length 157 [2024-11-22 04:06:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:22,565 INFO L471 AbstractCegarLoop]: Abstraction has 3055 states and 4001 transitions. [2024-11-22 04:06:22,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 4001 transitions. [2024-11-22 04:06:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:22,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:22,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:22,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 04:06:22,569 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:22,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:22,569 INFO L85 PathProgramCache]: Analyzing trace with hash -693552366, now seen corresponding path program 1 times [2024-11-22 04:06:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721480496] [2024-11-22 04:06:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:22,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721480496] [2024-11-22 04:06:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721480496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:22,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:22,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:22,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386458672] [2024-11-22 04:06:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:22,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:22,667 INFO L87 Difference]: Start difference. First operand 3055 states and 4001 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:23,456 INFO L93 Difference]: Finished difference Result 4846 states and 6843 transitions. [2024-11-22 04:06:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:23,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:23,469 INFO L225 Difference]: With dead ends: 4846 [2024-11-22 04:06:23,469 INFO L226 Difference]: Without dead ends: 3862 [2024-11-22 04:06:23,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:23,473 INFO L432 NwaCegarLoop]: 771 mSDtfsCounter, 1170 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:23,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 3099 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2024-11-22 04:06:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3730. [2024-11-22 04:06:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3181 states have (on average 1.3621502672115686) internal successors, (4333), 3210 states have internal predecessors, (4333), 298 states have call successors, (298), 199 states have call predecessors, (298), 249 states have return successors, (431), 324 states have call predecessors, (431), 295 states have call successors, (431) [2024-11-22 04:06:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5062 transitions. [2024-11-22 04:06:23,662 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5062 transitions. Word has length 157 [2024-11-22 04:06:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:23,662 INFO L471 AbstractCegarLoop]: Abstraction has 3730 states and 5062 transitions. [2024-11-22 04:06:23,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5062 transitions. [2024-11-22 04:06:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:23,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:23,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:23,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 04:06:23,666 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1983974480, now seen corresponding path program 1 times [2024-11-22 04:06:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:23,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185740218] [2024-11-22 04:06:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:23,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:23,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185740218] [2024-11-22 04:06:23,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185740218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270084799] [2024-11-22 04:06:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:23,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:23,770 INFO L87 Difference]: Start difference. First operand 3730 states and 5062 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:24,288 INFO L93 Difference]: Finished difference Result 5609 states and 8087 transitions. [2024-11-22 04:06:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:24,302 INFO L225 Difference]: With dead ends: 5609 [2024-11-22 04:06:24,303 INFO L226 Difference]: Without dead ends: 3950 [2024-11-22 04:06:24,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:24,308 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 881 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:24,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1240 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-11-22 04:06:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3730. [2024-11-22 04:06:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3181 states have (on average 1.360578434454574) internal successors, (4328), 3210 states have internal predecessors, (4328), 298 states have call successors, (298), 199 states have call predecessors, (298), 249 states have return successors, (431), 324 states have call predecessors, (431), 295 states have call successors, (431) [2024-11-22 04:06:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5057 transitions. [2024-11-22 04:06:24,506 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5057 transitions. Word has length 157 [2024-11-22 04:06:24,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:24,507 INFO L471 AbstractCegarLoop]: Abstraction has 3730 states and 5057 transitions. [2024-11-22 04:06:24,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5057 transitions. [2024-11-22 04:06:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:24,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:24,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:24,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 04:06:24,511 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:24,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1947526318, now seen corresponding path program 1 times [2024-11-22 04:06:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:24,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188886846] [2024-11-22 04:06:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188886846] [2024-11-22 04:06:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188886846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:24,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:24,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57301783] [2024-11-22 04:06:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:24,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:24,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:24,621 INFO L87 Difference]: Start difference. First operand 3730 states and 5057 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:25,124 INFO L93 Difference]: Finished difference Result 5598 states and 8055 transitions. [2024-11-22 04:06:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:25,136 INFO L225 Difference]: With dead ends: 5598 [2024-11-22 04:06:25,136 INFO L226 Difference]: Without dead ends: 3939 [2024-11-22 04:06:25,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:25,141 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 913 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:25,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1158 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2024-11-22 04:06:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3730. [2024-11-22 04:06:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3181 states have (on average 1.3590066016975795) internal successors, (4323), 3210 states have internal predecessors, (4323), 298 states have call successors, (298), 199 states have call predecessors, (298), 249 states have return successors, (431), 324 states have call predecessors, (431), 295 states have call successors, (431) [2024-11-22 04:06:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5052 transitions. [2024-11-22 04:06:25,528 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5052 transitions. Word has length 157 [2024-11-22 04:06:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:25,528 INFO L471 AbstractCegarLoop]: Abstraction has 3730 states and 5052 transitions. [2024-11-22 04:06:25,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5052 transitions. [2024-11-22 04:06:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:25,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:25,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:25,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 04:06:25,535 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:25,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1658706928, now seen corresponding path program 1 times [2024-11-22 04:06:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053037831] [2024-11-22 04:06:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053037831] [2024-11-22 04:06:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053037831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:25,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367852806] [2024-11-22 04:06:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:25,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:25,659 INFO L87 Difference]: Start difference. First operand 3730 states and 5052 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:26,703 INFO L93 Difference]: Finished difference Result 6991 states and 10240 transitions. [2024-11-22 04:06:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:26,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:26,719 INFO L225 Difference]: With dead ends: 6991 [2024-11-22 04:06:26,719 INFO L226 Difference]: Without dead ends: 5332 [2024-11-22 04:06:26,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:26,727 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 1149 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:26,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 3049 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 04:06:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2024-11-22 04:06:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 5179. [2024-11-22 04:06:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 4516 states have (on average 1.4258193091231177) internal successors, (6439), 4559 states have internal predecessors, (6439), 374 states have call successors, (374), 223 states have call predecessors, (374), 287 states have return successors, (555), 404 states have call predecessors, (555), 371 states have call successors, (555) [2024-11-22 04:06:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 7368 transitions. [2024-11-22 04:06:26,997 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 7368 transitions. Word has length 157 [2024-11-22 04:06:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 5179 states and 7368 transitions. [2024-11-22 04:06:26,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 7368 transitions. [2024-11-22 04:06:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:27,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:27,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:27,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 04:06:27,002 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:27,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2091387794, now seen corresponding path program 1 times [2024-11-22 04:06:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:27,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136405188] [2024-11-22 04:06:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:27,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136405188] [2024-11-22 04:06:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136405188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:27,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977061002] [2024-11-22 04:06:27,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:27,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:27,090 INFO L87 Difference]: Start difference. First operand 5179 states and 7368 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:28,107 INFO L93 Difference]: Finished difference Result 11658 states and 17866 transitions. [2024-11-22 04:06:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:28,132 INFO L225 Difference]: With dead ends: 11658 [2024-11-22 04:06:28,133 INFO L226 Difference]: Without dead ends: 8550 [2024-11-22 04:06:28,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:28,144 INFO L432 NwaCegarLoop]: 751 mSDtfsCounter, 1141 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:28,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3023 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8550 states. [2024-11-22 04:06:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8550 to 8347. [2024-11-22 04:06:28,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8347 states, 7438 states have (on average 1.4994622210271578) internal successors, (11153), 7527 states have internal predecessors, (11153), 526 states have call successors, (526), 271 states have call predecessors, (526), 381 states have return successors, (899), 564 states have call predecessors, (899), 523 states have call successors, (899) [2024-11-22 04:06:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12578 transitions. [2024-11-22 04:06:28,548 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 12578 transitions. Word has length 157 [2024-11-22 04:06:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:28,548 INFO L471 AbstractCegarLoop]: Abstraction has 8347 states and 12578 transitions. [2024-11-22 04:06:28,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 12578 transitions. [2024-11-22 04:06:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:28,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:28,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:28,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 04:06:28,554 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:28,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1143335828, now seen corresponding path program 1 times [2024-11-22 04:06:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140998855] [2024-11-22 04:06:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:28,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:28,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:28,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140998855] [2024-11-22 04:06:28,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140998855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:28,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:28,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:28,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762836035] [2024-11-22 04:06:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:28,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:28,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:28,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:28,624 INFO L87 Difference]: Start difference. First operand 8347 states and 12578 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:29,374 INFO L93 Difference]: Finished difference Result 15868 states and 25217 transitions. [2024-11-22 04:06:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:29,400 INFO L225 Difference]: With dead ends: 15868 [2024-11-22 04:06:29,400 INFO L226 Difference]: Without dead ends: 9592 [2024-11-22 04:06:29,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:29,417 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 872 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:29,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1206 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2024-11-22 04:06:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 8347. [2024-11-22 04:06:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8347 states, 7438 states have (on average 1.4971766603925787) internal successors, (11136), 7527 states have internal predecessors, (11136), 526 states have call successors, (526), 271 states have call predecessors, (526), 381 states have return successors, (899), 564 states have call predecessors, (899), 523 states have call successors, (899) [2024-11-22 04:06:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 12561 transitions. [2024-11-22 04:06:29,848 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 12561 transitions. Word has length 157 [2024-11-22 04:06:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:29,851 INFO L471 AbstractCegarLoop]: Abstraction has 8347 states and 12561 transitions. [2024-11-22 04:06:29,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 12561 transitions. [2024-11-22 04:06:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:29,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:29,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:29,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 04:06:29,858 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:29,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash 558564178, now seen corresponding path program 1 times [2024-11-22 04:06:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:29,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864444889] [2024-11-22 04:06:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864444889] [2024-11-22 04:06:29,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864444889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:29,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:29,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306997219] [2024-11-22 04:06:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:29,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:29,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:29,944 INFO L87 Difference]: Start difference. First operand 8347 states and 12561 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:31,178 INFO L93 Difference]: Finished difference Result 21954 states and 35243 transitions. [2024-11-22 04:06:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:31,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:31,223 INFO L225 Difference]: With dead ends: 21954 [2024-11-22 04:06:31,223 INFO L226 Difference]: Without dead ends: 15678 [2024-11-22 04:06:31,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:31,244 INFO L432 NwaCegarLoop]: 743 mSDtfsCounter, 1128 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:31,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 2992 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 04:06:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15678 states. [2024-11-22 04:06:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15678 to 15385. [2024-11-22 04:06:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15385 states, 13930 states have (on average 1.5636755204594401) internal successors, (21782), 14165 states have internal predecessors, (21782), 830 states have call successors, (830), 367 states have call predecessors, (830), 623 states have return successors, (1971), 884 states have call predecessors, (1971), 827 states have call successors, (1971) [2024-11-22 04:06:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 24583 transitions. [2024-11-22 04:06:32,301 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 24583 transitions. Word has length 157 [2024-11-22 04:06:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:32,301 INFO L471 AbstractCegarLoop]: Abstraction has 15385 states and 24583 transitions. [2024-11-22 04:06:32,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 24583 transitions. [2024-11-22 04:06:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:32,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:32,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:32,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 04:06:32,309 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:32,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash 124058580, now seen corresponding path program 1 times [2024-11-22 04:06:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153174338] [2024-11-22 04:06:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:32,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153174338] [2024-11-22 04:06:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153174338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:32,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:32,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963678638] [2024-11-22 04:06:32,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:32,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:32,383 INFO L87 Difference]: Start difference. First operand 15385 states and 24583 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:33,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:33,502 INFO L93 Difference]: Finished difference Result 31884 states and 53421 transitions. [2024-11-22 04:06:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:33,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:33,556 INFO L225 Difference]: With dead ends: 31884 [2024-11-22 04:06:33,557 INFO L226 Difference]: Without dead ends: 18570 [2024-11-22 04:06:33,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:33,585 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 868 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:33,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1192 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18570 states. [2024-11-22 04:06:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18570 to 15385. [2024-11-22 04:06:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15385 states, 13930 states have (on average 1.5613065326633166) internal successors, (21749), 14165 states have internal predecessors, (21749), 830 states have call successors, (830), 367 states have call predecessors, (830), 623 states have return successors, (1971), 884 states have call predecessors, (1971), 827 states have call successors, (1971) [2024-11-22 04:06:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 24550 transitions. [2024-11-22 04:06:34,342 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 24550 transitions. Word has length 157 [2024-11-22 04:06:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:34,343 INFO L471 AbstractCegarLoop]: Abstraction has 15385 states and 24550 transitions. [2024-11-22 04:06:34,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 24550 transitions. [2024-11-22 04:06:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:34,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:34,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:34,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 04:06:34,350 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:34,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -305599726, now seen corresponding path program 1 times [2024-11-22 04:06:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169530781] [2024-11-22 04:06:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169530781] [2024-11-22 04:06:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169530781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:34,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 04:06:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138220430] [2024-11-22 04:06:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:34,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 04:06:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 04:06:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 04:06:34,528 INFO L87 Difference]: Start difference. First operand 15385 states and 24550 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:35,588 INFO L93 Difference]: Finished difference Result 31639 states and 52865 transitions. [2024-11-22 04:06:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 04:06:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:35,644 INFO L225 Difference]: With dead ends: 31639 [2024-11-22 04:06:35,644 INFO L226 Difference]: Without dead ends: 18325 [2024-11-22 04:06:35,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:35,675 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 863 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:35,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1182 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 04:06:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18325 states. [2024-11-22 04:06:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18325 to 15385. [2024-11-22 04:06:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15385 states, 13930 states have (on average 1.5589375448671932) internal successors, (21716), 14165 states have internal predecessors, (21716), 830 states have call successors, (830), 367 states have call predecessors, (830), 623 states have return successors, (1971), 884 states have call predecessors, (1971), 827 states have call successors, (1971) [2024-11-22 04:06:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15385 states to 15385 states and 24517 transitions. [2024-11-22 04:06:36,696 INFO L78 Accepts]: Start accepts. Automaton has 15385 states and 24517 transitions. Word has length 157 [2024-11-22 04:06:36,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:36,697 INFO L471 AbstractCegarLoop]: Abstraction has 15385 states and 24517 transitions. [2024-11-22 04:06:36,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15385 states and 24517 transitions. [2024-11-22 04:06:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:36,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:36,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:36,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 04:06:36,703 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:36,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1012196332, now seen corresponding path program 1 times [2024-11-22 04:06:36,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410646455] [2024-11-22 04:06:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:36,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410646455] [2024-11-22 04:06:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410646455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:36,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:36,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:36,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003993732] [2024-11-22 04:06:36,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:36,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:36,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:36,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:36,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:36,923 INFO L87 Difference]: Start difference. First operand 15385 states and 24517 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:39,712 INFO L93 Difference]: Finished difference Result 46870 states and 78790 transitions. [2024-11-22 04:06:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:39,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:39,837 INFO L225 Difference]: With dead ends: 46870 [2024-11-22 04:06:39,837 INFO L226 Difference]: Without dead ends: 33556 [2024-11-22 04:06:39,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:39,884 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 1426 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:39,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2170 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33556 states. [2024-11-22 04:06:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33556 to 30584. [2024-11-22 04:06:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30584 states, 27907 states have (on average 1.6081986598344502) internal successors, (44880), 28596 states have internal predecessors, (44880), 1406 states have call successors, (1406), 559 states have call predecessors, (1406), 1269 states have return successors, (5619), 1492 states have call predecessors, (5619), 1403 states have call successors, (5619) [2024-11-22 04:06:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 51905 transitions. [2024-11-22 04:06:41,791 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 51905 transitions. Word has length 157 [2024-11-22 04:06:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:41,792 INFO L471 AbstractCegarLoop]: Abstraction has 30584 states and 51905 transitions. [2024-11-22 04:06:41,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 51905 transitions. [2024-11-22 04:06:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:41,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:41,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:41,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 04:06:41,803 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:41,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash -65158446, now seen corresponding path program 1 times [2024-11-22 04:06:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:41,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584300530] [2024-11-22 04:06:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:41,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584300530] [2024-11-22 04:06:41,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584300530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:41,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:41,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:41,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477641836] [2024-11-22 04:06:41,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:41,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:41,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:41,907 INFO L87 Difference]: Start difference. First operand 30584 states and 51905 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 04:06:45,874 INFO L93 Difference]: Finished difference Result 99129 states and 178132 transitions. [2024-11-22 04:06:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 04:06:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2024-11-22 04:06:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 04:06:46,224 INFO L225 Difference]: With dead ends: 99129 [2024-11-22 04:06:46,225 INFO L226 Difference]: Without dead ends: 70616 [2024-11-22 04:06:46,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 04:06:46,303 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 1185 mSDsluCounter, 2192 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 04:06:46,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 2917 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 04:06:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70616 states. [2024-11-22 04:06:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70616 to 65823. [2024-11-22 04:06:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65823 states, 60248 states have (on average 1.6509095737617847) internal successors, (99464), 62331 states have internal predecessors, (99464), 2526 states have call successors, (2526), 943 states have call predecessors, (2526), 3047 states have return successors, (19027), 2676 states have call predecessors, (19027), 2523 states have call successors, (19027) [2024-11-22 04:06:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65823 states to 65823 states and 121017 transitions. [2024-11-22 04:06:51,032 INFO L78 Accepts]: Start accepts. Automaton has 65823 states and 121017 transitions. Word has length 157 [2024-11-22 04:06:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 04:06:51,033 INFO L471 AbstractCegarLoop]: Abstraction has 65823 states and 121017 transitions. [2024-11-22 04:06:51,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 04:06:51,035 INFO L276 IsEmpty]: Start isEmpty. Operand 65823 states and 121017 transitions. [2024-11-22 04:06:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 04:06:51,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 04:06:51,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 04:06:51,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 04:06:51,053 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 04:06:51,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 04:06:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 796675156, now seen corresponding path program 1 times [2024-11-22 04:06:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 04:06:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734833274] [2024-11-22 04:06:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 04:06:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 04:06:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 04:06:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 04:06:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 04:06:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734833274] [2024-11-22 04:06:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734833274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 04:06:51,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 04:06:51,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 04:06:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208461934] [2024-11-22 04:06:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 04:06:51,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 04:06:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 04:06:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 04:06:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 04:06:51,213 INFO L87 Difference]: Start difference. First operand 65823 states and 121017 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)