./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd --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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:02:23,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:02:23,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:02:23,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:02:23,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:02:23,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:02:23,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:02:23,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:02:23,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:02:23,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:02:23,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:02:23,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:02:23,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:02:23,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:02:23,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:02:23,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:02:23,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:02:23,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:02:23,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:02:23,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:02:23,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:02:23,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:02:23,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:02:23,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:02:23,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:02:23,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:02:23,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:02:23,898 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_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd 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 -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2024-11-13 16:02:24,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:02:24,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:02:24,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:02:24,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:02:24,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:02:24,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i Unable to find full path for "g++" [2024-11-13 16:02:26,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:02:26,515 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:02:26,519 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2024-11-13 16:02:26,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/data/dfe7ad717/b4a5c3858bd140fcad8a3b395bea2613/FLAG45ee8f18e [2024-11-13 16:02:26,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/data/dfe7ad717/b4a5c3858bd140fcad8a3b395bea2613 [2024-11-13 16:02:26,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:02:26,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:02:26,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:02:26,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:02:26,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:02:26,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:02:26" (1/1) ... [2024-11-13 16:02:26,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95a5494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:26, skipping insertion in model container [2024-11-13 16:02:26,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:02:26" (1/1) ... [2024-11-13 16:02:26,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:02:27,216 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_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2024-11-13 16:02:27,368 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_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2024-11-13 16:02:27,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:02:27,411 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:02:27,453 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_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2024-11-13 16:02:27,550 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_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2024-11-13 16:02:27,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:02:27,636 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:02:27,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27 WrapperNode [2024-11-13 16:02:27,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:02:27,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:02:27,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:02:27,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:02:27,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,796 INFO L138 Inliner]: procedures = 208, calls = 278, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1433 [2024-11-13 16:02:27,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:02:27,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:02:27,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:02:27,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:02:27,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,988 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [34, 2, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [4, 0, 50]. [2024-11-13 16:02:27,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:27,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:02:28,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:02:28,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:02:28,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:02:28,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (1/1) ... [2024-11-13 16:02:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:02:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:28,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:02:28,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:02:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 16:02:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 16:02:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 16:02:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 16:02:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 16:02:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:02:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 16:02:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:02:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 16:02:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:02:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 16:02:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:02:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:02:28,423 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:02:28,425 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:02:30,388 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-13 16:02:30,389 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:02:30,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:02:30,426 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-13 16:02:30,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:02:30 BoogieIcfgContainer [2024-11-13 16:02:30,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:02:30,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:02:30,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:02:30,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:02:30,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:02:26" (1/3) ... [2024-11-13 16:02:30,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e020106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:02:30, skipping insertion in model container [2024-11-13 16:02:30,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:02:27" (2/3) ... [2024-11-13 16:02:30,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e020106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:02:30, skipping insertion in model container [2024-11-13 16:02:30,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:02:30" (3/3) ... [2024-11-13 16:02:30,437 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2024-11-13 16:02:30,453 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:02:30,454 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test2-2.i that has 5 procedures, 423 locations, 1 initial locations, 38 loop locations, and 2 error locations. [2024-11-13 16:02:30,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:02:30,546 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;@9ba906b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:02:30,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 16:02:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 415 states, 402 states have (on average 1.6243781094527363) internal successors, (653), 409 states have internal predecessors, (653), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:02:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:02:30,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:30,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:30,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:30,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -665455070, now seen corresponding path program 1 times [2024-11-13 16:02:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:30,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118471697] [2024-11-13 16:02:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:30,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:30,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:30,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118471697] [2024-11-13 16:02:30,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118471697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:30,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:30,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:02:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673067551] [2024-11-13 16:02:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:30,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:02:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:30,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:02:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:02:30,781 INFO L87 Difference]: Start difference. First operand has 415 states, 402 states have (on average 1.6243781094527363) internal successors, (653), 409 states have internal predecessors, (653), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:30,857 INFO L93 Difference]: Finished difference Result 828 states and 1341 transitions. [2024-11-13 16:02:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:02:30,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 16:02:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:30,878 INFO L225 Difference]: With dead ends: 828 [2024-11-13 16:02:30,879 INFO L226 Difference]: Without dead ends: 377 [2024-11-13 16:02:30,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:02:30,890 INFO L432 NwaCegarLoop]: 600 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, 600 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 [2024-11-13 16:02:30,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:02:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-13 16:02:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-13 16:02:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 365 states have (on average 1.4602739726027398) internal successors, (533), 371 states have internal predecessors, (533), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:02:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 549 transitions. [2024-11-13 16:02:30,967 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 549 transitions. Word has length 9 [2024-11-13 16:02:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:30,968 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 549 transitions. [2024-11-13 16:02:30,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 549 transitions. [2024-11-13 16:02:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 16:02:30,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:30,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:30,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:02:30,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 520151965, now seen corresponding path program 1 times [2024-11-13 16:02:30,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:30,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692400219] [2024-11-13 16:02:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:30,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692400219] [2024-11-13 16:02:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692400219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:02:31,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309007315] [2024-11-13 16:02:31,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:31,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:02:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:02:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:02:31,712 INFO L87 Difference]: Start difference. First operand 377 states and 549 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:31,953 INFO L93 Difference]: Finished difference Result 917 states and 1346 transitions. [2024-11-13 16:02:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:02:31,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 16:02:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:31,961 INFO L225 Difference]: With dead ends: 917 [2024-11-13 16:02:31,962 INFO L226 Difference]: Without dead ends: 741 [2024-11-13 16:02:31,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:02:31,966 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 518 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:31,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1583 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:02:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-13 16:02:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 379. [2024-11-13 16:02:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 367 states have (on average 1.457765667574932) internal successors, (535), 373 states have internal predecessors, (535), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:02:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 551 transitions. [2024-11-13 16:02:32,015 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 551 transitions. Word has length 64 [2024-11-13 16:02:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:32,019 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 551 transitions. [2024-11-13 16:02:32,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:32,019 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 551 transitions. [2024-11-13 16:02:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 16:02:32,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:32,028 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:32,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:02:32,028 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:32,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1794161643, now seen corresponding path program 1 times [2024-11-13 16:02:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601764082] [2024-11-13 16:02:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:32,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601764082] [2024-11-13 16:02:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601764082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:02:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665396325] [2024-11-13 16:02:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:32,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:02:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:02:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:02:32,680 INFO L87 Difference]: Start difference. First operand 379 states and 551 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:32,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:32,816 INFO L93 Difference]: Finished difference Result 712 states and 1032 transitions. [2024-11-13 16:02:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:02:32,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-13 16:02:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:32,819 INFO L225 Difference]: With dead ends: 712 [2024-11-13 16:02:32,819 INFO L226 Difference]: Without dead ends: 337 [2024-11-13 16:02:32,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:02:32,823 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 30 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:32,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1322 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:02:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-13 16:02:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2024-11-13 16:02:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 325 states have (on average 1.4092307692307693) internal successors, (458), 331 states have internal predecessors, (458), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:02:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 474 transitions. [2024-11-13 16:02:32,843 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 474 transitions. Word has length 140 [2024-11-13 16:02:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:32,843 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 474 transitions. [2024-11-13 16:02:32,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:32,844 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 474 transitions. [2024-11-13 16:02:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 16:02:32,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:32,848 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:32,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:02:32,848 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:32,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1730689887, now seen corresponding path program 1 times [2024-11-13 16:02:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942051492] [2024-11-13 16:02:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942051492] [2024-11-13 16:02:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942051492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:33,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:02:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978782745] [2024-11-13 16:02:33,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:33,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:02:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:02:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:02:33,194 INFO L87 Difference]: Start difference. First operand 337 states and 474 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:33,317 INFO L93 Difference]: Finished difference Result 905 states and 1288 transitions. [2024-11-13 16:02:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:02:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-13 16:02:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:33,325 INFO L225 Difference]: With dead ends: 905 [2024-11-13 16:02:33,325 INFO L226 Difference]: Without dead ends: 572 [2024-11-13 16:02:33,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:02:33,327 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 271 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:33,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1113 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:02:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-13 16:02:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 570. [2024-11-13 16:02:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 553 states have (on average 1.426763110307414) internal successors, (789), 564 states have internal predecessors, (789), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 16:02:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 815 transitions. [2024-11-13 16:02:33,359 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 815 transitions. Word has length 140 [2024-11-13 16:02:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:33,360 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 815 transitions. [2024-11-13 16:02:33,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 815 transitions. [2024-11-13 16:02:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-13 16:02:33,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:33,365 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:33,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:02:33,365 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:33,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 302798040, now seen corresponding path program 1 times [2024-11-13 16:02:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:33,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542800728] [2024-11-13 16:02:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:33,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:02:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:33,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:02:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:02:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542800728] [2024-11-13 16:02:33,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542800728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:33,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:33,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 16:02:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950325035] [2024-11-13 16:02:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:33,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:02:33,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:02:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:02:33,874 INFO L87 Difference]: Start difference. First operand 570 states and 815 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:34,341 INFO L93 Difference]: Finished difference Result 810 states and 1171 transitions. [2024-11-13 16:02:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:02:34,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2024-11-13 16:02:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:34,345 INFO L225 Difference]: With dead ends: 810 [2024-11-13 16:02:34,345 INFO L226 Difference]: Without dead ends: 489 [2024-11-13 16:02:34,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:02:34,350 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 41 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:34,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1334 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:02:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-13 16:02:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2024-11-13 16:02:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 469 states have (on average 1.3539445628997868) internal successors, (635), 480 states have internal predecessors, (635), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 16:02:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 661 transitions. [2024-11-13 16:02:34,385 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 661 transitions. Word has length 155 [2024-11-13 16:02:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:34,386 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 661 transitions. [2024-11-13 16:02:34,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 661 transitions. [2024-11-13 16:02:34,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-13 16:02:34,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:34,388 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:34,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:02:34,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:34,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 566300488, now seen corresponding path program 1 times [2024-11-13 16:02:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363846400] [2024-11-13 16:02:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:34,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:34,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:02:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:34,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:02:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:02:34,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:34,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363846400] [2024-11-13 16:02:34,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363846400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:34,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:02:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330939517] [2024-11-13 16:02:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:34,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:02:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:02:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:02:34,779 INFO L87 Difference]: Start difference. First operand 486 states and 661 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:35,164 INFO L93 Difference]: Finished difference Result 726 states and 995 transitions. [2024-11-13 16:02:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:02:35,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2024-11-13 16:02:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:35,168 INFO L225 Difference]: With dead ends: 726 [2024-11-13 16:02:35,169 INFO L226 Difference]: Without dead ends: 489 [2024-11-13 16:02:35,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:02:35,170 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 10 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:35,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1022 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:02:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-13 16:02:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2024-11-13 16:02:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 469 states have (on average 1.3411513859275053) internal successors, (629), 480 states have internal predecessors, (629), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 16:02:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 655 transitions. [2024-11-13 16:02:35,199 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 655 transitions. Word has length 155 [2024-11-13 16:02:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:35,200 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 655 transitions. [2024-11-13 16:02:35,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 655 transitions. [2024-11-13 16:02:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-13 16:02:35,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:35,203 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:35,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:02:35,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:35,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1365076338, now seen corresponding path program 1 times [2024-11-13 16:02:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:35,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734083133] [2024-11-13 16:02:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:35,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:02:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:35,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:02:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:35,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:35,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734083133] [2024-11-13 16:02:35,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734083133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:02:35,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:02:35,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:02:35,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600649182] [2024-11-13 16:02:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:02:35,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 16:02:35,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 16:02:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:02:35,660 INFO L87 Difference]: Start difference. First operand 486 states and 655 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:36,396 INFO L93 Difference]: Finished difference Result 963 states and 1301 transitions. [2024-11-13 16:02:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:02:36,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2024-11-13 16:02:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:36,403 INFO L225 Difference]: With dead ends: 963 [2024-11-13 16:02:36,403 INFO L226 Difference]: Without dead ends: 568 [2024-11-13 16:02:36,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:02:36,405 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 1033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:36,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1425 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:02:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-13 16:02:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 382. [2024-11-13 16:02:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 370 states have (on average 1.335135135135135) internal successors, (494), 376 states have internal predecessors, (494), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 16:02:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 510 transitions. [2024-11-13 16:02:36,436 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 510 transitions. Word has length 155 [2024-11-13 16:02:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:36,437 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 510 transitions. [2024-11-13 16:02:36,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:02:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 510 transitions. [2024-11-13 16:02:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-13 16:02:36,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:36,441 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:36,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:02:36,442 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:36,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash 508756128, now seen corresponding path program 1 times [2024-11-13 16:02:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:36,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421849801] [2024-11-13 16:02:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:37,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:02:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:37,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:02:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421849801] [2024-11-13 16:02:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421849801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995798886] [2024-11-13 16:02:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:37,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:37,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:02:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:38,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:02:38,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:38,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:02:38,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:02:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:38,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:38,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995798886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:38,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:38,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-13 16:02:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111966715] [2024-11-13 16:02:38,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:38,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:02:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:38,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:02:38,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:02:38,811 INFO L87 Difference]: Start difference. First operand 382 states and 510 transitions. Second operand has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 12 states have internal predecessors, (328), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 16:02:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:39,734 INFO L93 Difference]: Finished difference Result 1271 states and 1710 transitions. [2024-11-13 16:02:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:02:39,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 12 states have internal predecessors, (328), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 165 [2024-11-13 16:02:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:39,740 INFO L225 Difference]: With dead ends: 1271 [2024-11-13 16:02:39,740 INFO L226 Difference]: Without dead ends: 1137 [2024-11-13 16:02:39,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-13 16:02:39,742 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 1653 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:39,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 3423 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:02:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-11-13 16:02:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 729. [2024-11-13 16:02:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 713 states have (on average 1.3338008415147264) internal successors, (951), 719 states have internal predecessors, (951), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 16:02:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 973 transitions. [2024-11-13 16:02:39,792 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 973 transitions. Word has length 165 [2024-11-13 16:02:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:39,792 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 973 transitions. [2024-11-13 16:02:39,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 12 states have internal predecessors, (328), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 16:02:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 973 transitions. [2024-11-13 16:02:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-11-13 16:02:39,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:39,800 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-13 16:02:39,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:02:40,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:40,001 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:40,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:40,001 INFO L85 PathProgramCache]: Analyzing trace with hash -604616404, now seen corresponding path program 1 times [2024-11-13 16:02:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:40,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155032545] [2024-11-13 16:02:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:40,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:44,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:02:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:44,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:02:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155032545] [2024-11-13 16:02:44,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155032545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449847419] [2024-11-13 16:02:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:44,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:44,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:44,934 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:44,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:02:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:45,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 16:02:45,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:45,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:02:46,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:02:46,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:02:46,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:02:46,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:02:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:46,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 16:02:47,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449847419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:47,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:47,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 24 [2024-11-13 16:02:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369150911] [2024-11-13 16:02:47,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:47,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:02:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:47,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:02:47,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:02:47,688 INFO L87 Difference]: Start difference. First operand 729 states and 973 transitions. Second operand has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 23 states have internal predecessors, (1012), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 16:02:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:49,794 INFO L93 Difference]: Finished difference Result 2516 states and 3396 transitions. [2024-11-13 16:02:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 16:02:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 23 states have internal predecessors, (1012), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 393 [2024-11-13 16:02:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:49,808 INFO L225 Difference]: With dead ends: 2516 [2024-11-13 16:02:49,808 INFO L226 Difference]: Without dead ends: 2382 [2024-11-13 16:02:49,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 778 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:02:49,813 INFO L432 NwaCegarLoop]: 1412 mSDtfsCounter, 5121 mSDsluCounter, 11282 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 12694 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:49,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 12694 Invalid, 1065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 16:02:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2024-11-13 16:02:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1593. [2024-11-13 16:02:49,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1571 states have (on average 1.334818586887333) internal successors, (2097), 1577 states have internal predecessors, (2097), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 16:02:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2131 transitions. [2024-11-13 16:02:49,912 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2131 transitions. Word has length 393 [2024-11-13 16:02:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:49,913 INFO L471 AbstractCegarLoop]: Abstraction has 1593 states and 2131 transitions. [2024-11-13 16:02:49,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 23 states have internal predecessors, (1012), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 16:02:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2131 transitions. [2024-11-13 16:02:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2024-11-13 16:02:49,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:49,944 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-11-13 16:02:49,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:02:50,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:50,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:50,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash 720205892, now seen corresponding path program 2 times [2024-11-13 16:02:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006327168] [2024-11-13 16:02:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:10:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:48,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 16:10:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:48,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 16:10:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 506 proven. 3 refuted. 0 times theorem prover too weak. 2917 trivial. 0 not checked. [2024-11-13 16:10:48,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:10:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006327168] [2024-11-13 16:10:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006327168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:10:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861186596] [2024-11-13 16:10:48,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:10:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:10:48,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:10:48,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:10:50,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 16:10:50,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:10:50,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 16:10:50,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:10:50,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:10:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-13 16:10:51,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:10:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861186596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:10:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:10:51,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-13 16:10:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474908968] [2024-11-13 16:10:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:10:51,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:10:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:10:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:10:51,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:10:51,446 INFO L87 Difference]: Start difference. First operand 1593 states and 2131 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:10:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:10:52,632 INFO L93 Difference]: Finished difference Result 1855 states and 2484 transitions. [2024-11-13 16:10:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:10:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 849 [2024-11-13 16:10:52,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:10:52,647 INFO L225 Difference]: With dead ends: 1855 [2024-11-13 16:10:52,647 INFO L226 Difference]: Without dead ends: 1722 [2024-11-13 16:10:52,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:10:52,650 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 364 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:10:52,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1798 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 16:10:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-13 16:10:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1630. [2024-11-13 16:10:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1608 states have (on average 1.3277363184079602) internal successors, (2135), 1614 states have internal predecessors, (2135), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 16:10:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2169 transitions. [2024-11-13 16:10:52,753 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2169 transitions. Word has length 849 [2024-11-13 16:10:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:10:52,754 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2169 transitions. [2024-11-13 16:10:52,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:10:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2169 transitions. [2024-11-13 16:10:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2024-11-13 16:10:52,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:10:52,794 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-11-13 16:10:52,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:10:52,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ab3816d-8d85-41e6-9882-7a3d161e0fb2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 16:10:52,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:10:53,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:10:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1038120117, now seen corresponding path program 1 times [2024-11-13 16:10:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:10:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477605852] [2024-11-13 16:10:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:10:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms