./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC --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 d6572e4842c262533bee65d100c3a8328a4505c101a30c259390a3fe459f824d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:37:48,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:37:48,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:37:48,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:37:48,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:37:48,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:37:48,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:37:48,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:37:48,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:37:48,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:37:48,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:37:48,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:37:48,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:37:48,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:37:48,376 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:37:48,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:37:48,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:37:48,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:37:48,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:37:48,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:37:48,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:37:48,378 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:37:48,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:37:48,378 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:37:48,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:37:48,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:37:48,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:37:48,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:37:48,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:37:48,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:37:48,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:37:48,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:37:48,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:37:48,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:37:48,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:37:48,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:37:48,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:37:48,382 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC 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 -> d6572e4842c262533bee65d100c3a8328a4505c101a30c259390a3fe459f824d [2024-11-23 18:37:48,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:37:48,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:37:48,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:37:48,742 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:37:48,742 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:37:48,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/email_spec3_product24.cil.c [2024-11-23 18:37:51,989 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/data/e79a84a03/a41a9420eaaf4ad7ad81423f236fd2b4/FLAGf67dacfec [2024-11-23 18:37:52,534 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:37:52,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/sv-benchmarks/c/product-lines/email_spec3_product24.cil.c [2024-11-23 18:37:52,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/data/e79a84a03/a41a9420eaaf4ad7ad81423f236fd2b4/FLAGf67dacfec [2024-11-23 18:37:52,602 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/data/e79a84a03/a41a9420eaaf4ad7ad81423f236fd2b4 [2024-11-23 18:37:52,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:37:52,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:37:52,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:37:52,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:37:52,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:37:52,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:37:52" (1/1) ... [2024-11-23 18:37:52,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bd21ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:52, skipping insertion in model container [2024-11-23 18:37:52,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:37:52" (1/1) ... [2024-11-23 18:37:52,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:37:53,504 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/sv-benchmarks/c/product-lines/email_spec3_product24.cil.c[52737,52750] [2024-11-23 18:37:53,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:37:53,579 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:37:53,590 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-23 18:37:53,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [97] [2024-11-23 18:37:53,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [410] [2024-11-23 18:37:53,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [517] [2024-11-23 18:37:53,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1588] [2024-11-23 18:37:53,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1807] [2024-11-23 18:37:53,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2211] [2024-11-23 18:37:53,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2536] [2024-11-23 18:37:53,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2545] [2024-11-23 18:37:53,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2911] [2024-11-23 18:37:53,594 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2928] [2024-11-23 18:37:53,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/sv-benchmarks/c/product-lines/email_spec3_product24.cil.c[52737,52750] [2024-11-23 18:37:53,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:37:53,889 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:37:53,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53 WrapperNode [2024-11-23 18:37:53,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:37:53,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:37:53,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:37:53,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:37:53,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:53,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,005 INFO L138 Inliner]: procedures = 131, calls = 200, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1028 [2024-11-23 18:37:54,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:37:54,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:37:54,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:37:54,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:37:54,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,088 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-23 18:37:54,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:37:54,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:37:54,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:37:54,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:37:54,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (1/1) ... [2024-11-23 18:37:54,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:37:54,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:37:54,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:37:54,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:37:54,276 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-23 18:37:54,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-23 18:37:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-23 18:37:54,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-23 18:37:54,277 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-23 18:37:54,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-23 18:37:54,278 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-23 18:37:54,278 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-23 18:37:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-23 18:37:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-23 18:37:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-23 18:37:54,279 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-23 18:37:54,279 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-23 18:37:54,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-23 18:37:54,280 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-23 18:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-23 18:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-23 18:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-23 18:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-23 18:37:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-23 18:37:54,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-23 18:37:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-23 18:37:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-23 18:37:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:37:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:37:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:37:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:37:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-23 18:37:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-23 18:37:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:37:54,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:37:54,636 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:37:54,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:37:56,132 INFO L? ?]: Removed 457 outVars from TransFormulas that were not future-live. [2024-11-23 18:37:56,133 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:37:56,173 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:37:56,173 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:37:56,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:37:56 BoogieIcfgContainer [2024-11-23 18:37:56,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:37:56,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:37:56,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:37:56,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:37:56,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:37:52" (1/3) ... [2024-11-23 18:37:56,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d71ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:37:56, skipping insertion in model container [2024-11-23 18:37:56,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:37:53" (2/3) ... [2024-11-23 18:37:56,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d71ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:37:56, skipping insertion in model container [2024-11-23 18:37:56,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:37:56" (3/3) ... [2024-11-23 18:37:56,189 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec3_product24.cil.c [2024-11-23 18:37:56,208 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:37:56,211 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec3_product24.cil.c that has 21 procedures, 341 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:37:56,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:37:56,336 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;@6adfa9a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:37:56,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:37:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 265 states have (on average 1.5207547169811322) internal successors, (403), 269 states have internal predecessors, (403), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 18:37:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:37:56,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:56,369 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 18:37:56,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1395700300, now seen corresponding path program 1 times [2024-11-23 18:37:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:56,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681696006] [2024-11-23 18:37:56,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:56,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:37:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681696006] [2024-11-23 18:37:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681696006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:37:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022366092] [2024-11-23 18:37:57,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:57,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:37:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:37:57,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:37:57,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:37:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:57,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:37:57,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:37:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 18:37:58,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:37:58,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022366092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:58,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:37:58,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-23 18:37:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175891949] [2024-11-23 18:37:58,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:58,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:37:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:58,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:37:58,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:37:58,070 INFO L87 Difference]: Start difference. First operand has 341 states, 265 states have (on average 1.5207547169811322) internal successors, (403), 269 states have internal predecessors, (403), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:58,145 INFO L93 Difference]: Finished difference Result 523 states and 769 transitions. [2024-11-23 18:37:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:37:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2024-11-23 18:37:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:58,170 INFO L225 Difference]: With dead ends: 523 [2024-11-23 18:37:58,171 INFO L226 Difference]: Without dead ends: 333 [2024-11-23 18:37:58,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:37:58,185 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:58,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:37:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-23 18:37:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-23 18:37:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 259 states have (on average 1.5135135135135136) internal successors, (392), 261 states have internal predecessors, (392), 54 states have call successors, (54), 20 states have call predecessors, (54), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-23 18:37:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 497 transitions. [2024-11-23 18:37:58,294 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 497 transitions. Word has length 103 [2024-11-23 18:37:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:58,299 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 497 transitions. [2024-11-23 18:37:58,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 497 transitions. [2024-11-23 18:37:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:37:58,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:58,312 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-23 18:37:58,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:37:58,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:37:58,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:58,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2001172102, now seen corresponding path program 1 times [2024-11-23 18:37:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:58,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802533451] [2024-11-23 18:37:58,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:58,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:37:58,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:58,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802533451] [2024-11-23 18:37:58,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802533451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:37:58,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336659566] [2024-11-23 18:37:58,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:37:58,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:37:58,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:37:58,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:37:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:59,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:37:59,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:37:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 18:37:59,530 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:37:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336659566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:59,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:37:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:37:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764495218] [2024-11-23 18:37:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:59,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:37:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:59,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:37:59,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:37:59,536 INFO L87 Difference]: Start difference. First operand 333 states and 497 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:59,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:59,629 INFO L93 Difference]: Finished difference Result 511 states and 745 transitions. [2024-11-23 18:37:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:37:59,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2024-11-23 18:37:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:59,639 INFO L225 Difference]: With dead ends: 511 [2024-11-23 18:37:59,639 INFO L226 Difference]: Without dead ends: 335 [2024-11-23 18:37:59,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:37:59,641 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 1 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:59,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 988 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:37:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-23 18:37:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2024-11-23 18:37:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 260 states have (on average 1.5115384615384615) internal successors, (393), 262 states have internal predecessors, (393), 54 states have call successors, (54), 20 states have call predecessors, (54), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-23 18:37:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 498 transitions. [2024-11-23 18:37:59,674 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 498 transitions. Word has length 103 [2024-11-23 18:37:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:59,675 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 498 transitions. [2024-11-23 18:37:59,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:37:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 498 transitions. [2024-11-23 18:37:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 18:37:59,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:59,682 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:59,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:37:59,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:37:59,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:59,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -135043885, now seen corresponding path program 1 times [2024-11-23 18:37:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666238755] [2024-11-23 18:37:59,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:38:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666238755] [2024-11-23 18:38:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666238755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062897887] [2024-11-23 18:38:00,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:00,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:00,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:38:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:00,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:38:00,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 18:38:00,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:38:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062897887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:38:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:38:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088441958] [2024-11-23 18:38:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:00,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:00,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:00,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:38:00,810 INFO L87 Difference]: Start difference. First operand 334 states and 498 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:00,882 INFO L93 Difference]: Finished difference Result 703 states and 1063 transitions. [2024-11-23 18:38:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:00,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2024-11-23 18:38:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:00,892 INFO L225 Difference]: With dead ends: 703 [2024-11-23 18:38:00,892 INFO L226 Difference]: Without dead ends: 395 [2024-11-23 18:38:00,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:38:00,898 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 115 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:00,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 961 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-23 18:38:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2024-11-23 18:38:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 302 states have (on average 1.5298013245033113) internal successors, (462), 304 states have internal predecessors, (462), 65 states have call successors, (65), 20 states have call predecessors, (65), 19 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-23 18:38:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 589 transitions. [2024-11-23 18:38:00,962 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 589 transitions. Word has length 111 [2024-11-23 18:38:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:00,965 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 589 transitions. [2024-11-23 18:38:00,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 589 transitions. [2024-11-23 18:38:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 18:38:00,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:00,972 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:00,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:38:01,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:01,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:01,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash 296802473, now seen corresponding path program 1 times [2024-11-23 18:38:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:01,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388623459] [2024-11-23 18:38:01,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:38:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388623459] [2024-11-23 18:38:01,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388623459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250040880] [2024-11-23 18:38:01,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:01,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:01,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:01,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:38:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:01,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 18:38:01,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:38:02,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:38:02,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250040880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:02,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:38:02,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 18:38:02,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434580335] [2024-11-23 18:38:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:02,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:02,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:02,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:38:02,041 INFO L87 Difference]: Start difference. First operand 387 states and 589 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:02,157 INFO L93 Difference]: Finished difference Result 765 states and 1168 transitions. [2024-11-23 18:38:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:02,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2024-11-23 18:38:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:02,164 INFO L225 Difference]: With dead ends: 765 [2024-11-23 18:38:02,164 INFO L226 Difference]: Without dead ends: 389 [2024-11-23 18:38:02,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:38:02,168 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 2 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:02,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1945 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-23 18:38:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2024-11-23 18:38:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 303 states have (on average 1.528052805280528) internal successors, (463), 306 states have internal predecessors, (463), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2024-11-23 18:38:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 592 transitions. [2024-11-23 18:38:02,217 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 592 transitions. Word has length 112 [2024-11-23 18:38:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:02,218 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 592 transitions. [2024-11-23 18:38:02,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 592 transitions. [2024-11-23 18:38:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 18:38:02,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:02,221 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:02,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:38:02,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:02,422 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:02,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash -105941988, now seen corresponding path program 1 times [2024-11-23 18:38:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123831535] [2024-11-23 18:38:02,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:38:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123831535] [2024-11-23 18:38:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123831535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55679034] [2024-11-23 18:38:02,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:02,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:02,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:02,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:02,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:38:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:03,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:38:03,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 18:38:03,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:38:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55679034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:03,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:38:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-23 18:38:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373231528] [2024-11-23 18:38:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:03,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:03,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:03,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:38:03,249 INFO L87 Difference]: Start difference. First operand 389 states and 592 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:03,361 INFO L93 Difference]: Finished difference Result 767 states and 1173 transitions. [2024-11-23 18:38:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2024-11-23 18:38:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:03,367 INFO L225 Difference]: With dead ends: 767 [2024-11-23 18:38:03,367 INFO L226 Difference]: Without dead ends: 391 [2024-11-23 18:38:03,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:38:03,371 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 2 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:03,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1931 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-23 18:38:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-23 18:38:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 304 states have (on average 1.5263157894736843) internal successors, (464), 308 states have internal predecessors, (464), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2024-11-23 18:38:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 598 transitions. [2024-11-23 18:38:03,404 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 598 transitions. Word has length 113 [2024-11-23 18:38:03,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:03,404 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 598 transitions. [2024-11-23 18:38:03,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 598 transitions. [2024-11-23 18:38:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 18:38:03,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:03,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:03,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:38:03,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:03,609 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:03,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash 981191877, now seen corresponding path program 1 times [2024-11-23 18:38:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:03,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203895975] [2024-11-23 18:38:03,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:38:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203895975] [2024-11-23 18:38:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203895975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:38:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587762946] [2024-11-23 18:38:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:03,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:03,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:03,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:03,890 INFO L87 Difference]: Start difference. First operand 391 states and 598 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:03,959 INFO L93 Difference]: Finished difference Result 759 states and 1164 transitions. [2024-11-23 18:38:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2024-11-23 18:38:03,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:03,964 INFO L225 Difference]: With dead ends: 759 [2024-11-23 18:38:03,965 INFO L226 Difference]: Without dead ends: 391 [2024-11-23 18:38:03,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:03,971 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 2 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:03,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1949 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-23 18:38:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-23 18:38:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 304 states have (on average 1.5263157894736843) internal successors, (464), 308 states have internal predecessors, (464), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (68), 62 states have call predecessors, (68), 62 states have call successors, (68) [2024-11-23 18:38:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2024-11-23 18:38:04,010 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 114 [2024-11-23 18:38:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:04,011 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2024-11-23 18:38:04,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2024-11-23 18:38:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 18:38:04,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:04,018 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:04,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:38:04,018 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:04,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1466833190, now seen corresponding path program 2 times [2024-11-23 18:38:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149742942] [2024-11-23 18:38:04,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:38:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:04,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:38:04,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:38:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:38:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149742942] [2024-11-23 18:38:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149742942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:38:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850790500] [2024-11-23 18:38:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:04,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:04,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:04,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:04,232 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:04,335 INFO L93 Difference]: Finished difference Result 757 states and 1159 transitions. [2024-11-23 18:38:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2024-11-23 18:38:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:04,342 INFO L225 Difference]: With dead ends: 757 [2024-11-23 18:38:04,342 INFO L226 Difference]: Without dead ends: 391 [2024-11-23 18:38:04,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:04,346 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 2 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:04,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1935 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-23 18:38:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-23 18:38:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 304 states have (on average 1.5263157894736843) internal successors, (464), 308 states have internal predecessors, (464), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (67), 62 states have call predecessors, (67), 62 states have call successors, (67) [2024-11-23 18:38:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 596 transitions. [2024-11-23 18:38:04,390 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 596 transitions. Word has length 115 [2024-11-23 18:38:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:04,391 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 596 transitions. [2024-11-23 18:38:04,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 596 transitions. [2024-11-23 18:38:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 18:38:04,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:04,395 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:04,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:38:04,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:04,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1401997541, now seen corresponding path program 3 times [2024-11-23 18:38:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617183123] [2024-11-23 18:38:04,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:38:04,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:04,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 18:38:04,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:38:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:38:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617183123] [2024-11-23 18:38:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617183123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:04,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:38:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100454671] [2024-11-23 18:38:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:04,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:38:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:04,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:38:04,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:38:04,836 INFO L87 Difference]: Start difference. First operand 391 states and 596 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:05,823 INFO L93 Difference]: Finished difference Result 1041 states and 1510 transitions. [2024-11-23 18:38:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:38:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2024-11-23 18:38:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:05,835 INFO L225 Difference]: With dead ends: 1041 [2024-11-23 18:38:05,835 INFO L226 Difference]: Without dead ends: 872 [2024-11-23 18:38:05,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:38:05,839 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 1472 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:05,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 4189 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:38:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-23 18:38:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 862. [2024-11-23 18:38:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 674 states have (on average 1.4732937685459941) internal successors, (993), 681 states have internal predecessors, (993), 128 states have call successors, (128), 53 states have call predecessors, (128), 59 states have return successors, (138), 127 states have call predecessors, (138), 122 states have call successors, (138) [2024-11-23 18:38:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1259 transitions. [2024-11-23 18:38:05,918 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1259 transitions. Word has length 116 [2024-11-23 18:38:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:05,920 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 1259 transitions. [2024-11-23 18:38:05,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1259 transitions. [2024-11-23 18:38:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-23 18:38:05,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:05,924 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:05,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:38:05,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:05,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1748074131, now seen corresponding path program 1 times [2024-11-23 18:38:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263115468] [2024-11-23 18:38:05,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:05,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:38:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263115468] [2024-11-23 18:38:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263115468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:38:06,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764947303] [2024-11-23 18:38:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:06,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:06,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:06,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:06,162 INFO L87 Difference]: Start difference. First operand 862 states and 1259 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:06,267 INFO L93 Difference]: Finished difference Result 1703 states and 2491 transitions. [2024-11-23 18:38:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:06,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2024-11-23 18:38:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:06,276 INFO L225 Difference]: With dead ends: 1703 [2024-11-23 18:38:06,277 INFO L226 Difference]: Without dead ends: 864 [2024-11-23 18:38:06,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:06,284 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 1 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:06,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1952 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:06,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-23 18:38:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2024-11-23 18:38:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 675 states have (on average 1.4725925925925927) internal successors, (994), 683 states have internal predecessors, (994), 128 states have call successors, (128), 53 states have call predecessors, (128), 60 states have return successors, (140), 127 states have call predecessors, (140), 122 states have call successors, (140) [2024-11-23 18:38:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1262 transitions. [2024-11-23 18:38:06,351 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1262 transitions. Word has length 117 [2024-11-23 18:38:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:06,352 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1262 transitions. [2024-11-23 18:38:06,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1262 transitions. [2024-11-23 18:38:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-23 18:38:06,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:06,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:06,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:38:06,356 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:06,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1598735827, now seen corresponding path program 1 times [2024-11-23 18:38:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842135089] [2024-11-23 18:38:06,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 18:38:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842135089] [2024-11-23 18:38:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842135089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:38:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591361228] [2024-11-23 18:38:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:06,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:38:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:06,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:38:06,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:38:06,598 INFO L87 Difference]: Start difference. First operand 864 states and 1262 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:38:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:06,843 INFO L93 Difference]: Finished difference Result 1708 states and 2500 transitions. [2024-11-23 18:38:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:38:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2024-11-23 18:38:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:06,851 INFO L225 Difference]: With dead ends: 1708 [2024-11-23 18:38:06,852 INFO L226 Difference]: Without dead ends: 869 [2024-11-23 18:38:06,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:38:06,857 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 5 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:06,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3352 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-23 18:38:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2024-11-23 18:38:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 679 states have (on average 1.4712812960235642) internal successors, (999), 687 states have internal predecessors, (999), 128 states have call successors, (128), 54 states have call predecessors, (128), 61 states have return successors, (145), 127 states have call predecessors, (145), 122 states have call successors, (145) [2024-11-23 18:38:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1272 transitions. [2024-11-23 18:38:06,920 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1272 transitions. Word has length 118 [2024-11-23 18:38:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:06,921 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1272 transitions. [2024-11-23 18:38:06,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-23 18:38:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1272 transitions. [2024-11-23 18:38:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 18:38:06,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:06,924 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:06,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:38:06,925 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:06,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 275546201, now seen corresponding path program 1 times [2024-11-23 18:38:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:06,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260648197] [2024-11-23 18:38:06,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:06,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:38:07,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:07,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260648197] [2024-11-23 18:38:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260648197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:07,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:38:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294671214] [2024-11-23 18:38:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:07,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:38:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:07,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:38:07,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:07,113 INFO L87 Difference]: Start difference. First operand 869 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:07,231 INFO L93 Difference]: Finished difference Result 1710 states and 2508 transitions. [2024-11-23 18:38:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:38:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-11-23 18:38:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:07,240 INFO L225 Difference]: With dead ends: 1710 [2024-11-23 18:38:07,241 INFO L226 Difference]: Without dead ends: 871 [2024-11-23 18:38:07,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:07,247 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 0 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:07,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1931 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-23 18:38:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2024-11-23 18:38:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 679 states have (on average 1.4712812960235642) internal successors, (999), 687 states have internal predecessors, (999), 128 states have call successors, (128), 54 states have call predecessors, (128), 61 states have return successors, (145), 127 states have call predecessors, (145), 122 states have call successors, (145) [2024-11-23 18:38:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1272 transitions. [2024-11-23 18:38:07,315 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1272 transitions. Word has length 119 [2024-11-23 18:38:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:07,315 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1272 transitions. [2024-11-23 18:38:07,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:38:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1272 transitions. [2024-11-23 18:38:07,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 18:38:07,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:07,319 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:07,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:38:07,320 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:07,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1458558249, now seen corresponding path program 1 times [2024-11-23 18:38:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654820153] [2024-11-23 18:38:07,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:38:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:07,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654820153] [2024-11-23 18:38:07,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654820153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:07,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372372831] [2024-11-23 18:38:07,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:07,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:07,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:07,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:07,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:38:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:08,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:38:08,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:08,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:38:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372372831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:38:08,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:38:08,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-11-23 18:38:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861907869] [2024-11-23 18:38:08,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:38:08,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:38:08,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:08,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:38:08,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:38:08,238 INFO L87 Difference]: Start difference. First operand 869 states and 1272 transitions. Second operand has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 18:38:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:09,251 INFO L93 Difference]: Finished difference Result 2134 states and 3208 transitions. [2024-11-23 18:38:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 18:38:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 119 [2024-11-23 18:38:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:09,265 INFO L225 Difference]: With dead ends: 2134 [2024-11-23 18:38:09,266 INFO L226 Difference]: Without dead ends: 1296 [2024-11-23 18:38:09,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-23 18:38:09,275 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 1256 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3421 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:09,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 3421 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:38:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2024-11-23 18:38:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1218. [2024-11-23 18:38:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 964 states have (on average 1.520746887966805) internal successors, (1466), 971 states have internal predecessors, (1466), 192 states have call successors, (192), 55 states have call predecessors, (192), 61 states have return successors, (219), 191 states have call predecessors, (219), 186 states have call successors, (219) [2024-11-23 18:38:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1877 transitions. [2024-11-23 18:38:09,382 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1877 transitions. Word has length 119 [2024-11-23 18:38:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:09,383 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1877 transitions. [2024-11-23 18:38:09,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-23 18:38:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1877 transitions. [2024-11-23 18:38:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 18:38:09,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:09,389 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:09,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 18:38:09,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_939c6011-7f3a-4507-b0a1-8dfd2828ce96/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 18:38:09,594 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:09,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash -431390370, now seen corresponding path program 1 times [2024-11-23 18:38:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:09,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401151210] [2024-11-23 18:38:09,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:09,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:09,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401151210] [2024-11-23 18:38:09,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401151210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:09,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633334267] [2024-11-23 18:38:09,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:09,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:09,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:09,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:09,709 INFO L87 Difference]: Start difference. First operand 1218 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:09,851 INFO L93 Difference]: Finished difference Result 2699 states and 4222 transitions. [2024-11-23 18:38:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:09,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2024-11-23 18:38:09,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:09,866 INFO L225 Difference]: With dead ends: 2699 [2024-11-23 18:38:09,866 INFO L226 Difference]: Without dead ends: 1562 [2024-11-23 18:38:09,875 INFO L434 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 [2024-11-23 18:38:09,876 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 112 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:09,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 992 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:09,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2024-11-23 18:38:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1536. [2024-11-23 18:38:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1218 states have (on average 1.5467980295566504) internal successors, (1884), 1225 states have internal predecessors, (1884), 256 states have call successors, (256), 55 states have call predecessors, (256), 61 states have return successors, (293), 255 states have call predecessors, (293), 250 states have call successors, (293) [2024-11-23 18:38:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2433 transitions. [2024-11-23 18:38:10,007 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2433 transitions. Word has length 123 [2024-11-23 18:38:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:10,009 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 2433 transitions. [2024-11-23 18:38:10,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2433 transitions. [2024-11-23 18:38:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 18:38:10,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:10,017 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:10,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:38:10,017 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:10,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:10,018 INFO L85 PathProgramCache]: Analyzing trace with hash -854997259, now seen corresponding path program 1 times [2024-11-23 18:38:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516542409] [2024-11-23 18:38:10,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:10,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:10,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:10,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516542409] [2024-11-23 18:38:10,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516542409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:10,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:10,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:10,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108304367] [2024-11-23 18:38:10,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:10,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:10,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:10,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:10,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:10,111 INFO L87 Difference]: Start difference. First operand 1536 states and 2433 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:10,286 INFO L93 Difference]: Finished difference Result 3487 states and 5573 transitions. [2024-11-23 18:38:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:10,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-23 18:38:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:10,303 INFO L225 Difference]: With dead ends: 3487 [2024-11-23 18:38:10,304 INFO L226 Difference]: Without dead ends: 2083 [2024-11-23 18:38:10,312 INFO L434 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 [2024-11-23 18:38:10,313 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 110 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:10,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 984 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-23 18:38:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2057. [2024-11-23 18:38:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 1644 states have (on average 1.5681265206812651) internal successors, (2578), 1651 states have internal predecessors, (2578), 351 states have call successors, (351), 55 states have call predecessors, (351), 61 states have return successors, (388), 350 states have call predecessors, (388), 345 states have call successors, (388) [2024-11-23 18:38:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 3317 transitions. [2024-11-23 18:38:10,482 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 3317 transitions. Word has length 124 [2024-11-23 18:38:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:10,482 INFO L471 AbstractCegarLoop]: Abstraction has 2057 states and 3317 transitions. [2024-11-23 18:38:10,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 3317 transitions. [2024-11-23 18:38:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 18:38:10,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:10,495 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:10,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:38:10,495 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:10,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1363658032, now seen corresponding path program 1 times [2024-11-23 18:38:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347387951] [2024-11-23 18:38:10,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347387951] [2024-11-23 18:38:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347387951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:10,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379362450] [2024-11-23 18:38:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:10,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:10,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:10,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:10,587 INFO L87 Difference]: Start difference. First operand 2057 states and 3317 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:10,796 INFO L93 Difference]: Finished difference Result 4666 states and 7597 transitions. [2024-11-23 18:38:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-23 18:38:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:10,821 INFO L225 Difference]: With dead ends: 4666 [2024-11-23 18:38:10,821 INFO L226 Difference]: Without dead ends: 2872 [2024-11-23 18:38:10,833 INFO L434 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 [2024-11-23 18:38:10,834 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 108 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:10,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 981 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-11-23 18:38:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2846. [2024-11-23 18:38:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2310 states have (on average 1.5865800865800865) internal successors, (3665), 2317 states have internal predecessors, (3665), 474 states have call successors, (474), 55 states have call predecessors, (474), 61 states have return successors, (527), 473 states have call predecessors, (527), 468 states have call successors, (527) [2024-11-23 18:38:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4666 transitions. [2024-11-23 18:38:11,094 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4666 transitions. Word has length 125 [2024-11-23 18:38:11,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:11,094 INFO L471 AbstractCegarLoop]: Abstraction has 2846 states and 4666 transitions. [2024-11-23 18:38:11,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:11,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4666 transitions. [2024-11-23 18:38:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 18:38:11,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:11,113 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:11,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:38:11,114 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:11,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1973506924, now seen corresponding path program 1 times [2024-11-23 18:38:11,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:11,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490493458] [2024-11-23 18:38:11,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:11,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490493458] [2024-11-23 18:38:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490493458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:11,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:11,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257937042] [2024-11-23 18:38:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:11,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:11,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:11,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:11,236 INFO L87 Difference]: Start difference. First operand 2846 states and 4666 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:11,519 INFO L93 Difference]: Finished difference Result 6504 states and 10754 transitions. [2024-11-23 18:38:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2024-11-23 18:38:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:11,554 INFO L225 Difference]: With dead ends: 6504 [2024-11-23 18:38:11,555 INFO L226 Difference]: Without dead ends: 4133 [2024-11-23 18:38:11,569 INFO L434 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 [2024-11-23 18:38:11,571 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 106 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:11,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 981 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2024-11-23 18:38:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4107. [2024-11-23 18:38:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4107 states, 3392 states have (on average 1.6008254716981132) internal successors, (5430), 3399 states have internal predecessors, (5430), 653 states have call successors, (653), 55 states have call predecessors, (653), 61 states have return successors, (732), 652 states have call predecessors, (732), 647 states have call successors, (732) [2024-11-23 18:38:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 6815 transitions. [2024-11-23 18:38:11,936 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 6815 transitions. Word has length 126 [2024-11-23 18:38:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:11,937 INFO L471 AbstractCegarLoop]: Abstraction has 4107 states and 6815 transitions. [2024-11-23 18:38:11,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:11,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 6815 transitions. [2024-11-23 18:38:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 18:38:11,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:11,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:11,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:38:11,961 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:11,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1515716116, now seen corresponding path program 1 times [2024-11-23 18:38:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:11,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237521171] [2024-11-23 18:38:11,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:11,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:12,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:12,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237521171] [2024-11-23 18:38:12,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237521171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:12,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:12,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990755343] [2024-11-23 18:38:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:12,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:12,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:12,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:12,057 INFO L87 Difference]: Start difference. First operand 4107 states and 6815 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:12,407 INFO L93 Difference]: Finished difference Result 9530 states and 15941 transitions. [2024-11-23 18:38:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-23 18:38:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:12,471 INFO L225 Difference]: With dead ends: 9530 [2024-11-23 18:38:12,471 INFO L226 Difference]: Without dead ends: 6219 [2024-11-23 18:38:12,490 INFO L434 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 [2024-11-23 18:38:12,492 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 104 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:12,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 986 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2024-11-23 18:38:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 6193. [2024-11-23 18:38:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6193 states, 5102 states have (on average 1.6034888279106232) internal successors, (8181), 5109 states have internal predecessors, (8181), 1029 states have call successors, (1029), 55 states have call predecessors, (1029), 61 states have return successors, (1152), 1028 states have call predecessors, (1152), 1023 states have call successors, (1152) [2024-11-23 18:38:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6193 states to 6193 states and 10362 transitions. [2024-11-23 18:38:13,078 INFO L78 Accepts]: Start accepts. Automaton has 6193 states and 10362 transitions. Word has length 127 [2024-11-23 18:38:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:13,078 INFO L471 AbstractCegarLoop]: Abstraction has 6193 states and 10362 transitions. [2024-11-23 18:38:13,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6193 states and 10362 transitions. [2024-11-23 18:38:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 18:38:13,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:13,108 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 18:38:13,108 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:13,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash -616008784, now seen corresponding path program 1 times [2024-11-23 18:38:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375375744] [2024-11-23 18:38:13,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:13,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375375744] [2024-11-23 18:38:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375375744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993495774] [2024-11-23 18:38:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:13,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:13,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:13,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:13,242 INFO L87 Difference]: Start difference. First operand 6193 states and 10362 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:13,979 INFO L93 Difference]: Finished difference Result 15014 states and 25310 transitions. [2024-11-23 18:38:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2024-11-23 18:38:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:14,044 INFO L225 Difference]: With dead ends: 15014 [2024-11-23 18:38:14,045 INFO L226 Difference]: Without dead ends: 10003 [2024-11-23 18:38:14,063 INFO L434 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 [2024-11-23 18:38:14,063 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 102 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:14,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 984 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2024-11-23 18:38:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 9977. [2024-11-23 18:38:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9977 states, 8280 states have (on average 1.6070048309178744) internal successors, (13306), 8287 states have internal predecessors, (13306), 1635 states have call successors, (1635), 55 states have call predecessors, (1635), 61 states have return successors, (1836), 1634 states have call predecessors, (1836), 1629 states have call successors, (1836) [2024-11-23 18:38:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9977 states to 9977 states and 16777 transitions. [2024-11-23 18:38:14,788 INFO L78 Accepts]: Start accepts. Automaton has 9977 states and 16777 transitions. Word has length 128 [2024-11-23 18:38:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:14,789 INFO L471 AbstractCegarLoop]: Abstraction has 9977 states and 16777 transitions. [2024-11-23 18:38:14,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9977 states and 16777 transitions. [2024-11-23 18:38:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:38:14,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:14,826 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:14,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 18:38:14,826 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:14,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:14,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2141096838, now seen corresponding path program 1 times [2024-11-23 18:38:14,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:14,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430786359] [2024-11-23 18:38:14,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:14,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430786359] [2024-11-23 18:38:14,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430786359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:14,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240541991] [2024-11-23 18:38:14,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:14,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:14,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:14,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:14,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:14,917 INFO L87 Difference]: Start difference. First operand 9977 states and 16777 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:15,840 INFO L93 Difference]: Finished difference Result 25485 states and 43072 transitions. [2024-11-23 18:38:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-23 18:38:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:15,944 INFO L225 Difference]: With dead ends: 25485 [2024-11-23 18:38:15,944 INFO L226 Difference]: Without dead ends: 17150 [2024-11-23 18:38:15,980 INFO L434 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 [2024-11-23 18:38:15,981 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 100 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:15,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 998 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:16,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17150 states. [2024-11-23 18:38:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17150 to 17124. [2024-11-23 18:38:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 14224 states have (on average 1.6019403824521934) internal successors, (22786), 14231 states have internal predecessors, (22786), 2838 states have call successors, (2838), 55 states have call predecessors, (2838), 61 states have return successors, (3183), 2837 states have call predecessors, (3183), 2832 states have call successors, (3183) [2024-11-23 18:38:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 28807 transitions. [2024-11-23 18:38:17,571 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 28807 transitions. Word has length 129 [2024-11-23 18:38:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:17,571 INFO L471 AbstractCegarLoop]: Abstraction has 17124 states and 28807 transitions. [2024-11-23 18:38:17,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 28807 transitions. [2024-11-23 18:38:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 18:38:17,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:17,625 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:17,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 18:38:17,626 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1691384785, now seen corresponding path program 1 times [2024-11-23 18:38:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573339225] [2024-11-23 18:38:17,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:17,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:17,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573339225] [2024-11-23 18:38:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573339225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732234601] [2024-11-23 18:38:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:17,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:17,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:17,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:17,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:17,714 INFO L87 Difference]: Start difference. First operand 17124 states and 28807 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:19,031 INFO L93 Difference]: Finished difference Result 45021 states and 76105 transitions. [2024-11-23 18:38:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2024-11-23 18:38:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:19,195 INFO L225 Difference]: With dead ends: 45021 [2024-11-23 18:38:19,195 INFO L226 Difference]: Without dead ends: 30187 [2024-11-23 18:38:19,234 INFO L434 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 [2024-11-23 18:38:19,238 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 98 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:19,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 984 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30187 states. [2024-11-23 18:38:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30187 to 30161. [2024-11-23 18:38:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30161 states, 25222 states have (on average 1.5996352390769963) internal successors, (40346), 25229 states have internal predecessors, (40346), 4877 states have call successors, (4877), 55 states have call predecessors, (4877), 61 states have return successors, (5496), 4876 states have call predecessors, (5496), 4871 states have call successors, (5496) [2024-11-23 18:38:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30161 states to 30161 states and 50719 transitions. [2024-11-23 18:38:21,797 INFO L78 Accepts]: Start accepts. Automaton has 30161 states and 50719 transitions. Word has length 130 [2024-11-23 18:38:21,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:21,798 INFO L471 AbstractCegarLoop]: Abstraction has 30161 states and 50719 transitions. [2024-11-23 18:38:21,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 30161 states and 50719 transitions. [2024-11-23 18:38:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:38:21,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:21,859 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:21,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 18:38:21,859 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:21,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -105779452, now seen corresponding path program 1 times [2024-11-23 18:38:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612333953] [2024-11-23 18:38:21,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:21,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612333953] [2024-11-23 18:38:21,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612333953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:21,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:21,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361110521] [2024-11-23 18:38:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:21,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:21,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:21,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:21,957 INFO L87 Difference]: Start difference. First operand 30161 states and 50719 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:24,830 INFO L93 Difference]: Finished difference Result 81923 states and 138262 transitions. [2024-11-23 18:38:24,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:24,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2024-11-23 18:38:24,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:25,154 INFO L225 Difference]: With dead ends: 81923 [2024-11-23 18:38:25,154 INFO L226 Difference]: Without dead ends: 54827 [2024-11-23 18:38:25,235 INFO L434 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 [2024-11-23 18:38:25,237 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 96 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:25,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 989 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54827 states. [2024-11-23 18:38:29,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54827 to 54801. [2024-11-23 18:38:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54801 states, 46147 states have (on average 1.5950766030294494) internal successors, (73608), 46154 states have internal predecessors, (73608), 8592 states have call successors, (8592), 55 states have call predecessors, (8592), 61 states have return successors, (9743), 8591 states have call predecessors, (9743), 8586 states have call successors, (9743) [2024-11-23 18:38:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54801 states to 54801 states and 91943 transitions. [2024-11-23 18:38:29,790 INFO L78 Accepts]: Start accepts. Automaton has 54801 states and 91943 transitions. Word has length 131 [2024-11-23 18:38:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:29,791 INFO L471 AbstractCegarLoop]: Abstraction has 54801 states and 91943 transitions. [2024-11-23 18:38:29,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 54801 states and 91943 transitions. [2024-11-23 18:38:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 18:38:29,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:29,866 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:29,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 18:38:29,867 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1199068271, now seen corresponding path program 1 times [2024-11-23 18:38:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:29,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520595484] [2024-11-23 18:38:29,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520595484] [2024-11-23 18:38:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520595484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:38:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420302474] [2024-11-23 18:38:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:29,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:29,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:29,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:38:29,998 INFO L87 Difference]: Start difference. First operand 54801 states and 91943 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:33,650 INFO L93 Difference]: Finished difference Result 102460 states and 172160 transitions. [2024-11-23 18:38:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:33,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2024-11-23 18:38:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:34,365 INFO L225 Difference]: With dead ends: 102460 [2024-11-23 18:38:34,365 INFO L226 Difference]: Without dead ends: 101813 [2024-11-23 18:38:34,406 INFO L434 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 [2024-11-23 18:38:34,410 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 91 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:34,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 998 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101813 states. [2024-11-23 18:38:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101813 to 101787. [2024-11-23 18:38:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101787 states, 86334 states have (on average 1.5886093543679198) internal successors, (137151), 86341 states have internal predecessors, (137151), 15391 states have call successors, (15391), 55 states have call predecessors, (15391), 61 states have return successors, (17588), 15390 states have call predecessors, (17588), 15385 states have call successors, (17588) [2024-11-23 18:38:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101787 states to 101787 states and 170130 transitions. [2024-11-23 18:38:39,985 INFO L78 Accepts]: Start accepts. Automaton has 101787 states and 170130 transitions. Word has length 132 [2024-11-23 18:38:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:39,986 INFO L471 AbstractCegarLoop]: Abstraction has 101787 states and 170130 transitions. [2024-11-23 18:38:39,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:38:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 101787 states and 170130 transitions. [2024-11-23 18:38:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:38:40,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:40,074 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:40,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 18:38:40,075 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:40,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 134051589, now seen corresponding path program 1 times [2024-11-23 18:38:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618839602] [2024-11-23 18:38:40,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:38:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618839602] [2024-11-23 18:38:40,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618839602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:40,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:40,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 18:38:40,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21891184] [2024-11-23 18:38:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:40,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:38:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:40,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:38:40,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:38:40,581 INFO L87 Difference]: Start difference. First operand 101787 states and 170130 transitions. Second operand has 11 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-23 18:38:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:44,035 INFO L93 Difference]: Finished difference Result 102659 states and 171392 transitions. [2024-11-23 18:38:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:38:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 133 [2024-11-23 18:38:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:44,555 INFO L225 Difference]: With dead ends: 102659 [2024-11-23 18:38:44,555 INFO L226 Difference]: Without dead ends: 101723 [2024-11-23 18:38:44,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:38:44,598 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 136 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:44,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 4853 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101723 states.