./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:28:53,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:28:53,125 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:28:53,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:28:53,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:28:53,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:28:53,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:28:53,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:28:53,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:28:53,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:28:53,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:28:53,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:28:53,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:28:53,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:28:53,183 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:28:53,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:28:53,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:28:53,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:28:53,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:28:53,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:28:53,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:28:53,185 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:28:53,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:28:53,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:53,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:28:53,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:53,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:28:53,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:28:53,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:28:53,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:28:53,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:28:53,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:28:53,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:28:53,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:28:53,189 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_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a [2024-11-23 23:28:53,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:28:53,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:28:53,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:28:53,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:28:53,539 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:28:53,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2024-11-23 23:28:56,620 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/data/0dc65b6e0/ba4bbe0af8d04f5b88816c77d5b233ff/FLAGee47ec908 [2024-11-23 23:28:57,138 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:28:57,139 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2024-11-23 23:28:57,169 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/data/0dc65b6e0/ba4bbe0af8d04f5b88816c77d5b233ff/FLAGee47ec908 [2024-11-23 23:28:57,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/data/0dc65b6e0/ba4bbe0af8d04f5b88816c77d5b233ff [2024-11-23 23:28:57,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:28:57,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:28:57,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:28:57,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:28:57,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:28:57,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:28:57" (1/1) ... [2024-11-23 23:28:57,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5529bea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:57, skipping insertion in model container [2024-11-23 23:28:57,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:28:57" (1/1) ... [2024-11-23 23:28:57,299 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:28:58,125 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_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2024-11-23 23:28:58,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:28:58,231 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:28:58,560 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_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2024-11-23 23:28:58,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:28:58,733 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:28:58,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58 WrapperNode [2024-11-23 23:28:58,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:28:58,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:28:58,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:28:58,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:28:58,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,854 INFO L138 Inliner]: procedures = 78, calls = 266, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 1017 [2024-11-23 23:28:58,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:28:58,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:28:58,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:28:58,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:28:58,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,988 INFO L175 MemorySlicer]: Split 160 memory accesses to 6 slices as follows [2, 6, 8, 82, 20, 42]. 51 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 6, 8, 6, 1, 0]. The 103 writes are split as follows [0, 0, 0, 42, 19, 42]. [2024-11-23 23:28:58,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:58,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,047 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:28:59,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:28:59,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:28:59,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:28:59,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (1/1) ... [2024-11-23 23:28:59,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:59,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:28:59,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:28:59,168 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_init [2024-11-23 23:28:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_init [2024-11-23 23:28:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:28:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-23 23:28:59,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-23 23:28:59,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:28:59,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:28:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:28:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:28:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:28:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:28:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:28:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2024-11-23 23:28:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2024-11-23 23:28:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_exit [2024-11-23 23:28:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_exit [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:28:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-23 23:28:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:28:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2024-11-23 23:28:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 23:28:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 23:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2024-11-23 23:28:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2024-11-23 23:28:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:28:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-23 23:28:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-23 23:28:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-23 23:28:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-23 23:28:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-23 23:28:59,178 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-23 23:28:59,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2024-11-23 23:28:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2024-11-23 23:28:59,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2024-11-23 23:28:59,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2024-11-23 23:28:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2024-11-23 23:28:59,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:28:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:28:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:28:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:28:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:28:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:28:59,502 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:28:59,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:28:59,735 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2024-11-23 23:28:59,748 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:29:05,243 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2024-11-23 23:29:05,243 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2024-11-23 23:29:05,316 INFO L? ?]: Removed 279 outVars from TransFormulas that were not future-live. [2024-11-23 23:29:05,317 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:29:05,333 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:29:05,335 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-23 23:29:05,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:29:05 BoogieIcfgContainer [2024-11-23 23:29:05,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:29:05,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:29:05,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:29:05,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:29:05,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:28:57" (1/3) ... [2024-11-23 23:29:05,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2660311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:29:05, skipping insertion in model container [2024-11-23 23:29:05,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:58" (2/3) ... [2024-11-23 23:29:05,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2660311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:29:05, skipping insertion in model container [2024-11-23 23:29:05,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:29:05" (3/3) ... [2024-11-23 23:29:05,350 INFO L128 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2024-11-23 23:29:05,366 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:29:05,368 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i that has 16 procedures, 202 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-23 23:29:05,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:29:05,470 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;@275a9f74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:29:05,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:29:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 157 states have (on average 1.356687898089172) internal successors, (213), 163 states have internal predecessors, (213), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 23:29:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-23 23:29:05,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:05,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:05,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:05,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash -699315634, now seen corresponding path program 1 times [2024-11-23 23:29:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518878417] [2024-11-23 23:29:05,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:08,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518878417] [2024-11-23 23:29:08,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518878417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:08,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74462237] [2024-11-23 23:29:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:08,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:08,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:08,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:08,055 INFO L87 Difference]: Start difference. First operand has 201 states, 157 states have (on average 1.356687898089172) internal successors, (213), 163 states have internal predecessors, (213), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:29:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:08,164 INFO L93 Difference]: Finished difference Result 551 states and 769 transitions. [2024-11-23 23:29:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-23 23:29:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:08,183 INFO L225 Difference]: With dead ends: 551 [2024-11-23 23:29:08,183 INFO L226 Difference]: Without dead ends: 358 [2024-11-23 23:29:08,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:08,190 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 235 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:08,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 534 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:29:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-23 23:29:08,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2024-11-23 23:29:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 283 states have internal predecessors, (351), 50 states have call successors, (50), 25 states have call predecessors, (50), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-23 23:29:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 447 transitions. [2024-11-23 23:29:08,291 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 447 transitions. Word has length 17 [2024-11-23 23:29:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:08,291 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 447 transitions. [2024-11-23 23:29:08,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:29:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 447 transitions. [2024-11-23 23:29:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-23 23:29:08,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:08,293 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:08,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:29:08,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:08,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash -204055180, now seen corresponding path program 1 times [2024-11-23 23:29:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:08,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465797986] [2024-11-23 23:29:08,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:10,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:10,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465797986] [2024-11-23 23:29:10,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465797986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:10,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:10,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84569448] [2024-11-23 23:29:10,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:10,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:10,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:10,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:10,379 INFO L87 Difference]: Start difference. First operand 354 states and 447 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:29:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:10,481 INFO L93 Difference]: Finished difference Result 1023 states and 1302 transitions. [2024-11-23 23:29:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-23 23:29:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:10,491 INFO L225 Difference]: With dead ends: 1023 [2024-11-23 23:29:10,491 INFO L226 Difference]: Without dead ends: 679 [2024-11-23 23:29:10,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:10,493 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 225 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:10,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 546 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:29:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-23 23:29:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 672. [2024-11-23 23:29:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 533 states have (on average 1.2551594746716699) internal successors, (669), 536 states have internal predecessors, (669), 93 states have call successors, (93), 46 states have call predecessors, (93), 45 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:29:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 851 transitions. [2024-11-23 23:29:10,590 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 851 transitions. Word has length 18 [2024-11-23 23:29:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:10,591 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 851 transitions. [2024-11-23 23:29:10,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 23:29:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 851 transitions. [2024-11-23 23:29:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-23 23:29:10,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:10,592 INFO L218 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] [2024-11-23 23:29:10,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:29:10,593 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:10,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1993488230, now seen corresponding path program 1 times [2024-11-23 23:29:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093182298] [2024-11-23 23:29:10,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:12,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:12,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093182298] [2024-11-23 23:29:12,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093182298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:12,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:29:12,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403250884] [2024-11-23 23:29:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:12,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:29:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:12,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:29:12,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:29:12,444 INFO L87 Difference]: Start difference. First operand 672 states and 851 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 23:29:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:12,572 INFO L93 Difference]: Finished difference Result 1331 states and 1688 transitions. [2024-11-23 23:29:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:29:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-23 23:29:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:12,586 INFO L225 Difference]: With dead ends: 1331 [2024-11-23 23:29:12,586 INFO L226 Difference]: Without dead ends: 672 [2024-11-23 23:29:12,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:29:12,588 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:12,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1168 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-23 23:29:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2024-11-23 23:29:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 533 states have (on average 1.25328330206379) internal successors, (668), 536 states have internal predecessors, (668), 93 states have call successors, (93), 46 states have call predecessors, (93), 45 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:29:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 850 transitions. [2024-11-23 23:29:12,647 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 850 transitions. Word has length 49 [2024-11-23 23:29:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:12,647 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 850 transitions. [2024-11-23 23:29:12,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 23:29:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 850 transitions. [2024-11-23 23:29:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 23:29:12,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:12,653 INFO L218 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] [2024-11-23 23:29:12,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:29:12,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:12,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1393910753, now seen corresponding path program 1 times [2024-11-23 23:29:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:12,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167845637] [2024-11-23 23:29:12,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167845637] [2024-11-23 23:29:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167845637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:14,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:14,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:14,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909625563] [2024-11-23 23:29:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:14,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:14,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:14,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:14,395 INFO L87 Difference]: Start difference. First operand 672 states and 850 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 23:29:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:14,520 INFO L93 Difference]: Finished difference Result 1370 states and 1753 transitions. [2024-11-23 23:29:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2024-11-23 23:29:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:14,528 INFO L225 Difference]: With dead ends: 1370 [2024-11-23 23:29:14,529 INFO L226 Difference]: Without dead ends: 715 [2024-11-23 23:29:14,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:14,534 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 105 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:14,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 351 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-23 23:29:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 703. [2024-11-23 23:29:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 564 states have (on average 1.2588652482269505) internal successors, (710), 567 states have internal predecessors, (710), 93 states have call successors, (93), 46 states have call predecessors, (93), 45 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-23 23:29:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 892 transitions. [2024-11-23 23:29:14,612 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 892 transitions. Word has length 54 [2024-11-23 23:29:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:14,613 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 892 transitions. [2024-11-23 23:29:14,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-23 23:29:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 892 transitions. [2024-11-23 23:29:14,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:29:14,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:14,615 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:14,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:29:14,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:14,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:14,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1980657502, now seen corresponding path program 1 times [2024-11-23 23:29:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:14,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694099463] [2024-11-23 23:29:14,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 23:29:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694099463] [2024-11-23 23:29:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694099463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368356449] [2024-11-23 23:29:17,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:17,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:17,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:17,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:29:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:19,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 23:29:19,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:29:19,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:29:19,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368356449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:19,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:29:19,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-23 23:29:19,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874090122] [2024-11-23 23:29:19,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:19,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:29:19,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:19,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:29:19,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:29:19,720 INFO L87 Difference]: Start difference. First operand 703 states and 892 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:19,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:19,830 INFO L93 Difference]: Finished difference Result 1152 states and 1459 transitions. [2024-11-23 23:29:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:29:19,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2024-11-23 23:29:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:19,835 INFO L225 Difference]: With dead ends: 1152 [2024-11-23 23:29:19,835 INFO L226 Difference]: Without dead ends: 467 [2024-11-23 23:29:19,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:29:19,838 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:19,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-23 23:29:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2024-11-23 23:29:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 370 states have (on average 1.2432432432432432) internal successors, (460), 373 states have internal predecessors, (460), 63 states have call successors, (63), 34 states have call predecessors, (63), 33 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-23 23:29:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 582 transitions. [2024-11-23 23:29:19,880 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 582 transitions. Word has length 91 [2024-11-23 23:29:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 582 transitions. [2024-11-23 23:29:19,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 582 transitions. [2024-11-23 23:29:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:29:19,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:19,886 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:19,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:29:20,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:20,091 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:20,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1910262912, now seen corresponding path program 1 times [2024-11-23 23:29:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022349810] [2024-11-23 23:29:20,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:29:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022349810] [2024-11-23 23:29:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022349810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281133888] [2024-11-23 23:29:23,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:23,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:23,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:23,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:29:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:25,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-23 23:29:25,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:29:26,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:29:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281133888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:29:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 12 [2024-11-23 23:29:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610992428] [2024-11-23 23:29:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:26,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:29:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:26,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:29:26,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:29:26,138 INFO L87 Difference]: Start difference. First operand 467 states and 582 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:29:26,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:26,538 INFO L93 Difference]: Finished difference Result 952 states and 1197 transitions. [2024-11-23 23:29:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:29:26,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-23 23:29:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:26,545 INFO L225 Difference]: With dead ends: 952 [2024-11-23 23:29:26,545 INFO L226 Difference]: Without dead ends: 503 [2024-11-23 23:29:26,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:29:26,549 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 1 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:26,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2097 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:29:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-23 23:29:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 500. [2024-11-23 23:29:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 397 states have (on average 1.234256926952141) internal successors, (490), 400 states have internal predecessors, (490), 63 states have call successors, (63), 34 states have call predecessors, (63), 39 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2024-11-23 23:29:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 627 transitions. [2024-11-23 23:29:26,589 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 627 transitions. Word has length 90 [2024-11-23 23:29:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:26,589 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 627 transitions. [2024-11-23 23:29:26,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-23 23:29:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 627 transitions. [2024-11-23 23:29:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:29:26,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:26,594 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:26,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:29:26,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:29:26,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:26,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash 683963905, now seen corresponding path program 1 times [2024-11-23 23:29:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894250963] [2024-11-23 23:29:26,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:29:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894250963] [2024-11-23 23:29:29,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894250963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847950043] [2024-11-23 23:29:29,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:29,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:29,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:29,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:29:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:31,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-23 23:29:31,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:29:32,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 23:29:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847950043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:29:32,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:29:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-23 23:29:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93288085] [2024-11-23 23:29:32,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:29:32,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:29:32,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:32,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:29:32,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:32,934 INFO L87 Difference]: Start difference. First operand 500 states and 627 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:29:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:33,361 INFO L93 Difference]: Finished difference Result 1021 states and 1290 transitions. [2024-11-23 23:29:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:29:33,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 90 [2024-11-23 23:29:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:33,366 INFO L225 Difference]: With dead ends: 1021 [2024-11-23 23:29:33,367 INFO L226 Difference]: Without dead ends: 539 [2024-11-23 23:29:33,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:33,369 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 3 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:33,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1868 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:29:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-23 23:29:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 515. [2024-11-23 23:29:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 409 states have (on average 1.2273838630806846) internal successors, (502), 409 states have internal predecessors, (502), 66 states have call successors, (66), 34 states have call predecessors, (66), 39 states have return successors, (80), 71 states have call predecessors, (80), 62 states have call successors, (80) [2024-11-23 23:29:33,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 648 transitions. [2024-11-23 23:29:33,405 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 648 transitions. Word has length 90 [2024-11-23 23:29:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:33,406 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 648 transitions. [2024-11-23 23:29:33,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 23:29:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 648 transitions. [2024-11-23 23:29:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:29:33,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:33,408 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:33,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:29:33,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:33,612 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:33,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash 784875872, now seen corresponding path program 2 times [2024-11-23 23:29:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:33,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111125011] [2024-11-23 23:29:33,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:29:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:35,017 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:29:35,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:29:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 23:29:35,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:35,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111125011] [2024-11-23 23:29:35,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111125011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:35,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:35,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:29:35,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072157592] [2024-11-23 23:29:35,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:35,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:29:35,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:35,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:29:35,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:29:35,779 INFO L87 Difference]: Start difference. First operand 515 states and 648 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:35,908 INFO L93 Difference]: Finished difference Result 918 states and 1165 transitions. [2024-11-23 23:29:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:29:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2024-11-23 23:29:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:35,915 INFO L225 Difference]: With dead ends: 918 [2024-11-23 23:29:35,916 INFO L226 Difference]: Without dead ends: 530 [2024-11-23 23:29:35,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:29:35,918 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:35,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1391 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-23 23:29:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2024-11-23 23:29:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 421 states have (on average 1.2209026128266034) internal successors, (514), 418 states have internal predecessors, (514), 66 states have call successors, (66), 34 states have call predecessors, (66), 42 states have return successors, (85), 77 states have call predecessors, (85), 62 states have call successors, (85) [2024-11-23 23:29:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 665 transitions. [2024-11-23 23:29:35,951 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 665 transitions. Word has length 90 [2024-11-23 23:29:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:35,952 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 665 transitions. [2024-11-23 23:29:35,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 665 transitions. [2024-11-23 23:29:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-23 23:29:35,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:35,954 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:35,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:29:35,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:35,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 796191999, now seen corresponding path program 1 times [2024-11-23 23:29:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904566873] [2024-11-23 23:29:35,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-23 23:29:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904566873] [2024-11-23 23:29:38,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904566873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:38,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:29:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445487991] [2024-11-23 23:29:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:38,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:29:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:38,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:29:38,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:38,517 INFO L87 Difference]: Start difference. First operand 530 states and 665 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:38,746 INFO L93 Difference]: Finished difference Result 928 states and 1174 transitions. [2024-11-23 23:29:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:29:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2024-11-23 23:29:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:38,755 INFO L225 Difference]: With dead ends: 928 [2024-11-23 23:29:38,755 INFO L226 Difference]: Without dead ends: 530 [2024-11-23 23:29:38,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:38,757 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:38,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1832 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:29:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-23 23:29:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2024-11-23 23:29:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 421 states have (on average 1.2161520190023754) internal successors, (512), 418 states have internal predecessors, (512), 66 states have call successors, (66), 34 states have call predecessors, (66), 42 states have return successors, (85), 77 states have call predecessors, (85), 62 states have call successors, (85) [2024-11-23 23:29:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 663 transitions. [2024-11-23 23:29:38,789 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 663 transitions. Word has length 90 [2024-11-23 23:29:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:38,791 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 663 transitions. [2024-11-23 23:29:38,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 23:29:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 663 transitions. [2024-11-23 23:29:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-23 23:29:38,793 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:38,793 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:38,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:29:38,794 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:38,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 181052609, now seen corresponding path program 1 times [2024-11-23 23:29:38,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:38,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401951323] [2024-11-23 23:29:38,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:29:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401951323] [2024-11-23 23:29:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401951323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:29:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022219203] [2024-11-23 23:29:41,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:41,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:29:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:41,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:29:41,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:29:41,005 INFO L87 Difference]: Start difference. First operand 530 states and 663 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:29:45,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:29:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:45,578 INFO L93 Difference]: Finished difference Result 933 states and 1177 transitions. [2024-11-23 23:29:45,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:29:45,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 91 [2024-11-23 23:29:45,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:45,590 INFO L225 Difference]: With dead ends: 933 [2024-11-23 23:29:45,590 INFO L226 Difference]: Without dead ends: 930 [2024-11-23 23:29:45,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:29:45,592 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 304 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:45,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 725 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-23 23:29:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-23 23:29:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 902. [2024-11-23 23:29:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 723 states have (on average 1.2268326417704012) internal successors, (887), 716 states have internal predecessors, (887), 110 states have call successors, (110), 54 states have call predecessors, (110), 68 states have return successors, (149), 131 states have call predecessors, (149), 106 states have call successors, (149) [2024-11-23 23:29:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1146 transitions. [2024-11-23 23:29:45,664 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1146 transitions. Word has length 91 [2024-11-23 23:29:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:45,665 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1146 transitions. [2024-11-23 23:29:45,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 23:29:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1146 transitions. [2024-11-23 23:29:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 23:29:45,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:45,668 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:45,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:29:45,669 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:45,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:45,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1126178966, now seen corresponding path program 1 times [2024-11-23 23:29:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:45,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762598021] [2024-11-23 23:29:45,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:45,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:29:47,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762598021] [2024-11-23 23:29:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762598021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:47,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:47,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:29:47,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182235826] [2024-11-23 23:29:47,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:47,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:29:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:47,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:29:47,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:29:47,212 INFO L87 Difference]: Start difference. First operand 902 states and 1146 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:29:51,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:29:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:51,390 INFO L93 Difference]: Finished difference Result 1801 states and 2293 transitions. [2024-11-23 23:29:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:29:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2024-11-23 23:29:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:51,397 INFO L225 Difference]: With dead ends: 1801 [2024-11-23 23:29:51,398 INFO L226 Difference]: Without dead ends: 884 [2024-11-23 23:29:51,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:29:51,401 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 92 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:51,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 834 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:29:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2024-11-23 23:29:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 857. [2024-11-23 23:29:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 688 states have (on average 1.2209302325581395) internal successors, (840), 685 states have internal predecessors, (840), 109 states have call successors, (109), 48 states have call predecessors, (109), 59 states have return successors, (143), 123 states have call predecessors, (143), 105 states have call successors, (143) [2024-11-23 23:29:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1092 transitions. [2024-11-23 23:29:51,454 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1092 transitions. Word has length 102 [2024-11-23 23:29:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:51,454 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1092 transitions. [2024-11-23 23:29:51,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-23 23:29:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1092 transitions. [2024-11-23 23:29:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 23:29:51,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:51,456 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:51,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:29:51,457 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:51,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1540614679, now seen corresponding path program 1 times [2024-11-23 23:29:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485894231] [2024-11-23 23:29:51,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:51,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:29:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485894231] [2024-11-23 23:29:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485894231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:53,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:29:53,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26657822] [2024-11-23 23:29:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:53,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:29:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:53,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:29:53,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:29:53,537 INFO L87 Difference]: Start difference. First operand 857 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:29:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:53,669 INFO L93 Difference]: Finished difference Result 1271 states and 1626 transitions. [2024-11-23 23:29:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:29:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-23 23:29:53,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:53,677 INFO L225 Difference]: With dead ends: 1271 [2024-11-23 23:29:53,678 INFO L226 Difference]: Without dead ends: 865 [2024-11-23 23:29:53,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:29:53,680 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:53,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1422 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:29:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-23 23:29:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2024-11-23 23:29:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 696 states have (on average 1.2183908045977012) internal successors, (848), 689 states have internal predecessors, (848), 109 states have call successors, (109), 48 states have call predecessors, (109), 59 states have return successors, (143), 127 states have call predecessors, (143), 105 states have call successors, (143) [2024-11-23 23:29:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1100 transitions. [2024-11-23 23:29:53,725 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1100 transitions. Word has length 110 [2024-11-23 23:29:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:53,725 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1100 transitions. [2024-11-23 23:29:53,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:29:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1100 transitions. [2024-11-23 23:29:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 23:29:53,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:53,727 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:53,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:29:53,727 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:53,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:53,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1210848918, now seen corresponding path program 1 times [2024-11-23 23:29:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794449415] [2024-11-23 23:29:53,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 23:29:55,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:55,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794449415] [2024-11-23 23:29:55,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794449415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:29:55,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813484819] [2024-11-23 23:29:55,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:55,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:29:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:55,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:29:55,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:55,943 INFO L87 Difference]: Start difference. First operand 865 states and 1100 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:29:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:56,181 INFO L93 Difference]: Finished difference Result 917 states and 1158 transitions. [2024-11-23 23:29:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:29:56,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-11-23 23:29:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:56,191 INFO L225 Difference]: With dead ends: 917 [2024-11-23 23:29:56,191 INFO L226 Difference]: Without dead ends: 869 [2024-11-23 23:29:56,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:29:56,193 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:56,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1839 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:29:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-23 23:29:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2024-11-23 23:29:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 700 states have (on average 1.217142857142857) internal successors, (852), 693 states have internal predecessors, (852), 109 states have call successors, (109), 48 states have call predecessors, (109), 59 states have return successors, (143), 127 states have call predecessors, (143), 105 states have call successors, (143) [2024-11-23 23:29:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1104 transitions. [2024-11-23 23:29:56,237 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1104 transitions. Word has length 110 [2024-11-23 23:29:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:56,237 INFO L471 AbstractCegarLoop]: Abstraction has 869 states and 1104 transitions. [2024-11-23 23:29:56,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 7 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:29:56,238 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1104 transitions. [2024-11-23 23:29:56,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:29:56,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:56,241 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:56,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:29:56,242 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:56,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1216121673, now seen corresponding path program 1 times [2024-11-23 23:29:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512926924] [2024-11-23 23:29:56,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:29:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512926924] [2024-11-23 23:29:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512926924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:29:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379023978] [2024-11-23 23:29:57,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:57,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:57,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:57,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:57,754 INFO L87 Difference]: Start difference. First operand 869 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:29:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:29:57,815 INFO L93 Difference]: Finished difference Result 1647 states and 2110 transitions. [2024-11-23 23:29:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-11-23 23:29:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:29:57,823 INFO L225 Difference]: With dead ends: 1647 [2024-11-23 23:29:57,823 INFO L226 Difference]: Without dead ends: 833 [2024-11-23 23:29:57,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:57,826 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:29:57,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:29:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-11-23 23:29:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2024-11-23 23:29:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 670 states have (on average 1.2119402985074628) internal successors, (812), 667 states have internal predecessors, (812), 105 states have call successors, (105), 48 states have call predecessors, (105), 57 states have return successors, (133), 117 states have call predecessors, (133), 101 states have call successors, (133) [2024-11-23 23:29:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1050 transitions. [2024-11-23 23:29:57,875 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1050 transitions. Word has length 111 [2024-11-23 23:29:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:29:57,876 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1050 transitions. [2024-11-23 23:29:57,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:29:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1050 transitions. [2024-11-23 23:29:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:29:57,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:29:57,877 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:57,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:29:57,878 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:29:57,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2042645348, now seen corresponding path program 1 times [2024-11-23 23:29:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:57,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872478578] [2024-11-23 23:29:57,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:57,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-23 23:29:59,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872478578] [2024-11-23 23:29:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872478578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290239602] [2024-11-23 23:29:59,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:59,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:59,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:59,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:30:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:02,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:30:02,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 23:30:03,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:30:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 23:30:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290239602] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:04,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:30:04,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 7] total 13 [2024-11-23 23:30:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782873278] [2024-11-23 23:30:04,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:04,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:30:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:04,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:30:04,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:30:04,176 INFO L87 Difference]: Start difference. First operand 833 states and 1050 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:30:08,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:30:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:10,099 INFO L93 Difference]: Finished difference Result 2258 states and 2841 transitions. [2024-11-23 23:30:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:30:10,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 113 [2024-11-23 23:30:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:10,112 INFO L225 Difference]: With dead ends: 2258 [2024-11-23 23:30:10,112 INFO L226 Difference]: Without dead ends: 1794 [2024-11-23 23:30:10,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:30:10,117 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 615 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:10,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 893 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-11-23 23:30:10,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2024-11-23 23:30:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1679. [2024-11-23 23:30:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1340 states have (on average 1.2186567164179105) internal successors, (1633), 1343 states have internal predecessors, (1633), 214 states have call successors, (214), 102 states have call predecessors, (214), 124 states have return successors, (279), 233 states have call predecessors, (279), 208 states have call successors, (279) [2024-11-23 23:30:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2126 transitions. [2024-11-23 23:30:10,217 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2126 transitions. Word has length 113 [2024-11-23 23:30:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:10,219 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 2126 transitions. [2024-11-23 23:30:10,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:30:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2126 transitions. [2024-11-23 23:30:10,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:30:10,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:10,222 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:10,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:30:10,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:10,423 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:10,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 854107953, now seen corresponding path program 1 times [2024-11-23 23:30:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:10,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672980130] [2024-11-23 23:30:10,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:10,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:30:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672980130] [2024-11-23 23:30:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672980130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:13,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:13,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:30:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675866185] [2024-11-23 23:30:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:13,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:30:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:13,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:30:13,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:13,263 INFO L87 Difference]: Start difference. First operand 1679 states and 2126 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:30:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:13,371 INFO L93 Difference]: Finished difference Result 2384 states and 3015 transitions. [2024-11-23 23:30:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 136 [2024-11-23 23:30:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:13,379 INFO L225 Difference]: With dead ends: 2384 [2024-11-23 23:30:13,380 INFO L226 Difference]: Without dead ends: 909 [2024-11-23 23:30:13,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:13,386 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:13,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:30:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-23 23:30:13,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2024-11-23 23:30:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 724 states have (on average 1.2085635359116023) internal successors, (875), 725 states have internal predecessors, (875), 116 states have call successors, (116), 57 states have call predecessors, (116), 68 states have return successors, (149), 126 states have call predecessors, (149), 111 states have call successors, (149) [2024-11-23 23:30:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1140 transitions. [2024-11-23 23:30:13,441 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1140 transitions. Word has length 136 [2024-11-23 23:30:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:13,441 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1140 transitions. [2024-11-23 23:30:13,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-23 23:30:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1140 transitions. [2024-11-23 23:30:13,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:30:13,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:13,444 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:13,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:30:13,445 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:13,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 686084400, now seen corresponding path program 1 times [2024-11-23 23:30:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252829276] [2024-11-23 23:30:13,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:30:15,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252829276] [2024-11-23 23:30:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252829276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:15,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:15,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:30:15,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935099764] [2024-11-23 23:30:15,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:15,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:30:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:15,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:30:15,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:15,804 INFO L87 Difference]: Start difference. First operand 909 states and 1140 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:30:19,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:30:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:20,278 INFO L93 Difference]: Finished difference Result 1462 states and 1835 transitions. [2024-11-23 23:30:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:20,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 136 [2024-11-23 23:30:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:20,288 INFO L225 Difference]: With dead ends: 1462 [2024-11-23 23:30:20,289 INFO L226 Difference]: Without dead ends: 1457 [2024-11-23 23:30:20,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:20,291 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 212 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:20,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 654 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-23 23:30:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-11-23 23:30:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1421. [2024-11-23 23:30:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1133 states have (on average 1.2056487202118271) internal successors, (1366), 1130 states have internal predecessors, (1366), 180 states have call successors, (180), 87 states have call predecessors, (180), 107 states have return successors, (245), 203 states have call predecessors, (245), 175 states have call successors, (245) [2024-11-23 23:30:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1791 transitions. [2024-11-23 23:30:20,418 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1791 transitions. Word has length 136 [2024-11-23 23:30:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:20,419 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 1791 transitions. [2024-11-23 23:30:20,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-23 23:30:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1791 transitions. [2024-11-23 23:30:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-23 23:30:20,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:20,422 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:20,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:30:20,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:20,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash 572060484, now seen corresponding path program 1 times [2024-11-23 23:30:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188259128] [2024-11-23 23:30:20,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:20,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-23 23:30:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188259128] [2024-11-23 23:30:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188259128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:30:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383961781] [2024-11-23 23:30:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:22,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:30:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:22,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:30:22,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:30:22,630 INFO L87 Difference]: Start difference. First operand 1421 states and 1791 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:30:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:22,780 INFO L93 Difference]: Finished difference Result 1465 states and 1837 transitions. [2024-11-23 23:30:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2024-11-23 23:30:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:22,794 INFO L225 Difference]: With dead ends: 1465 [2024-11-23 23:30:22,794 INFO L226 Difference]: Without dead ends: 1446 [2024-11-23 23:30:22,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:22,796 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 230 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:22,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 505 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:30:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-23 23:30:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1427. [2024-11-23 23:30:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1139 states have (on average 1.2010535557506585) internal successors, (1368), 1136 states have internal predecessors, (1368), 180 states have call successors, (180), 87 states have call predecessors, (180), 107 states have return successors, (245), 203 states have call predecessors, (245), 175 states have call successors, (245) [2024-11-23 23:30:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1793 transitions. [2024-11-23 23:30:22,878 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1793 transitions. Word has length 150 [2024-11-23 23:30:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:22,880 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1793 transitions. [2024-11-23 23:30:22,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 23:30:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1793 transitions. [2024-11-23 23:30:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 23:30:22,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:22,883 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:22,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 23:30:22,883 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:22,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash -984997408, now seen corresponding path program 1 times [2024-11-23 23:30:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630442744] [2024-11-23 23:30:22,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-23 23:30:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630442744] [2024-11-23 23:30:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630442744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146296330] [2024-11-23 23:30:24,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:24,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:24,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:24,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:30:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:27,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 2370 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:30:27,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-23 23:30:27,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146296330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:27,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-23 23:30:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856076463] [2024-11-23 23:30:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:27,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:30:27,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:27,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:30:27,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:27,734 INFO L87 Difference]: Start difference. First operand 1427 states and 1793 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:30:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:27,883 INFO L93 Difference]: Finished difference Result 1956 states and 2450 transitions. [2024-11-23 23:30:27,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:30:27,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2024-11-23 23:30:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:27,890 INFO L225 Difference]: With dead ends: 1956 [2024-11-23 23:30:27,890 INFO L226 Difference]: Without dead ends: 717 [2024-11-23 23:30:27,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:27,894 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 68 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:27,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 444 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:30:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-23 23:30:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2024-11-23 23:30:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 564 states have (on average 1.1861702127659575) internal successors, (669), 565 states have internal predecessors, (669), 89 states have call successors, (89), 50 states have call predecessors, (89), 57 states have return successors, (110), 95 states have call predecessors, (110), 85 states have call successors, (110) [2024-11-23 23:30:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 868 transitions. [2024-11-23 23:30:27,938 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 868 transitions. Word has length 153 [2024-11-23 23:30:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:27,939 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 868 transitions. [2024-11-23 23:30:27,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 23:30:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 868 transitions. [2024-11-23 23:30:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 23:30:27,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:27,942 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:27,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:28,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:28,143 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2055193825, now seen corresponding path program 1 times [2024-11-23 23:30:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:28,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006156531] [2024-11-23 23:30:28,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:28,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:30:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006156531] [2024-11-23 23:30:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006156531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:30:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:30:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623070222] [2024-11-23 23:30:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:29,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:30:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:29,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:30:29,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:30:29,805 INFO L87 Difference]: Start difference. First operand 711 states and 868 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:30:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:29,840 INFO L93 Difference]: Finished difference Result 983 states and 1202 transitions. [2024-11-23 23:30:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:30:29,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2024-11-23 23:30:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:29,845 INFO L225 Difference]: With dead ends: 983 [2024-11-23 23:30:29,845 INFO L226 Difference]: Without dead ends: 453 [2024-11-23 23:30:29,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:30:29,850 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:29,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 458 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:30:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-23 23:30:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2024-11-23 23:30:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 360 states have (on average 1.175) internal successors, (423), 361 states have internal predecessors, (423), 57 states have call successors, (57), 33 states have call predecessors, (57), 35 states have return successors, (63), 58 states have call predecessors, (63), 53 states have call successors, (63) [2024-11-23 23:30:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 543 transitions. [2024-11-23 23:30:29,889 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 543 transitions. Word has length 165 [2024-11-23 23:30:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:29,889 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 543 transitions. [2024-11-23 23:30:29,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 23:30:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 543 transitions. [2024-11-23 23:30:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 23:30:29,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:29,894 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:29,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 23:30:29,894 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:29,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 791184156, now seen corresponding path program 1 times [2024-11-23 23:30:29,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739829947] [2024-11-23 23:30:29,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 23:30:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739829947] [2024-11-23 23:30:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739829947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222028290] [2024-11-23 23:30:31,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:31,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:31,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:30:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:34,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:30:34,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:30:35,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:35,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222028290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:35,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:35,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2024-11-23 23:30:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099911346] [2024-11-23 23:30:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:35,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:30:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:35,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:30:35,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:30:35,946 INFO L87 Difference]: Start difference. First operand 453 states and 543 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:30:39,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:30:43,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:30:48,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:30:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:49,303 INFO L93 Difference]: Finished difference Result 465 states and 552 transitions. [2024-11-23 23:30:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:30:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 167 [2024-11-23 23:30:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:49,307 INFO L225 Difference]: With dead ends: 465 [2024-11-23 23:30:49,307 INFO L226 Difference]: Without dead ends: 415 [2024-11-23 23:30:49,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:30:49,309 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 273 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 76 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:49,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 378 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 315 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2024-11-23 23:30:49,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-23 23:30:49,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 410. [2024-11-23 23:30:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.1753846153846155) internal successors, (382), 329 states have internal predecessors, (382), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2024-11-23 23:30:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 485 transitions. [2024-11-23 23:30:49,338 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 485 transitions. Word has length 167 [2024-11-23 23:30:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:49,338 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 485 transitions. [2024-11-23 23:30:49,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 23:30:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 485 transitions. [2024-11-23 23:30:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-23 23:30:49,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:49,342 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:49,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:49,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:49,543 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:49,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash -628377753, now seen corresponding path program 1 times [2024-11-23 23:30:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447382060] [2024-11-23 23:30:49,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-23 23:30:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:51,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447382060] [2024-11-23 23:30:51,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447382060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:51,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470632966] [2024-11-23 23:30:51,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:51,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:51,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:51,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:51,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:30:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:54,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:30:54,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 23:30:54,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470632966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:54,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 23:30:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710776410] [2024-11-23 23:30:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:54,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:30:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:54,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:30:54,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:54,219 INFO L87 Difference]: Start difference. First operand 410 states and 485 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:30:54,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:54,276 INFO L93 Difference]: Finished difference Result 711 states and 843 transitions. [2024-11-23 23:30:54,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:30:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 194 [2024-11-23 23:30:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:54,281 INFO L225 Difference]: With dead ends: 711 [2024-11-23 23:30:54,281 INFO L226 Difference]: Without dead ends: 410 [2024-11-23 23:30:54,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:30:54,286 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 2 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:54,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 421 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:30:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-23 23:30:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-11-23 23:30:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 325 states have (on average 1.1692307692307693) internal successors, (380), 329 states have internal predecessors, (380), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2024-11-23 23:30:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 483 transitions. [2024-11-23 23:30:54,317 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 483 transitions. Word has length 194 [2024-11-23 23:30:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:54,318 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 483 transitions. [2024-11-23 23:30:54,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-23 23:30:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 483 transitions. [2024-11-23 23:30:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:30:54,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:54,322 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:54,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:30:54,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:54,523 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:54,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2126091996, now seen corresponding path program 1 times [2024-11-23 23:30:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019436579] [2024-11-23 23:30:54,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:30:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-23 23:30:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:30:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019436579] [2024-11-23 23:30:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019436579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:30:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141789714] [2024-11-23 23:30:56,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:30:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:30:56,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:30:56,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:30:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:59,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:30:59,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-23 23:30:59,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:59,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141789714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-23 23:30:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886208084] [2024-11-23 23:30:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:59,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:30:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:59,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:30:59,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:30:59,809 INFO L87 Difference]: Start difference. First operand 410 states and 483 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:31:03,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:31:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:03,928 INFO L93 Difference]: Finished difference Result 419 states and 490 transitions. [2024-11-23 23:31:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:31:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 196 [2024-11-23 23:31:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:03,932 INFO L225 Difference]: With dead ends: 419 [2024-11-23 23:31:03,932 INFO L226 Difference]: Without dead ends: 363 [2024-11-23 23:31:03,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:31:03,934 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 76 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:03,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 754 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 23:31:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-23 23:31:03,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2024-11-23 23:31:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 289 states have (on average 1.1695501730103806) internal successors, (338), 291 states have internal predecessors, (338), 43 states have call successors, (43), 28 states have call predecessors, (43), 28 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2024-11-23 23:31:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 423 transitions. [2024-11-23 23:31:03,959 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 423 transitions. Word has length 196 [2024-11-23 23:31:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:03,960 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 423 transitions. [2024-11-23 23:31:03,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-23 23:31:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 423 transitions. [2024-11-23 23:31:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-23 23:31:03,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:03,965 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:03,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:31:04,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:31:04,166 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:04,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash -720704061, now seen corresponding path program 1 times [2024-11-23 23:31:04,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:04,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549101671] [2024-11-23 23:31:04,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-23 23:31:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549101671] [2024-11-23 23:31:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549101671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:31:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751082225] [2024-11-23 23:31:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:06,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:31:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:06,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:31:06,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:31:06,087 INFO L87 Difference]: Start difference. First operand 361 states and 423 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-23 23:31:10,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:31:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:10,282 INFO L93 Difference]: Finished difference Result 363 states and 424 transitions. [2024-11-23 23:31:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:31:10,283 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), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 268 [2024-11-23 23:31:10,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:10,287 INFO L225 Difference]: With dead ends: 363 [2024-11-23 23:31:10,287 INFO L226 Difference]: Without dead ends: 348 [2024-11-23 23:31:10,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:31:10,288 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 286 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:10,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 268 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 23:31:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-23 23:31:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 342. [2024-11-23 23:31:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 275 states have (on average 1.1672727272727272) internal successors, (321), 277 states have internal predecessors, (321), 40 states have call successors, (40), 27 states have call predecessors, (40), 26 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-23 23:31:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 399 transitions. [2024-11-23 23:31:10,315 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 399 transitions. Word has length 268 [2024-11-23 23:31:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:10,316 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 399 transitions. [2024-11-23 23:31:10,316 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), 4 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-23 23:31:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 399 transitions. [2024-11-23 23:31:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-23 23:31:10,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:31:10,322 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:31:10,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:31:10,322 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:31:10,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:31:10,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2004040725, now seen corresponding path program 1 times [2024-11-23 23:31:10,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:31:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399751885] [2024-11-23 23:31:10,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:31:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:31:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-11-23 23:31:12,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:31:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399751885] [2024-11-23 23:31:12,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399751885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:31:12,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:31:12,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:31:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182749575] [2024-11-23 23:31:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:31:12,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:31:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:31:12,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:31:12,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:31:12,286 INFO L87 Difference]: Start difference. First operand 342 states and 399 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-23 23:31:16,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:31:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:31:16,502 INFO L93 Difference]: Finished difference Result 342 states and 399 transitions. [2024-11-23 23:31:16,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:31:16,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 315 [2024-11-23 23:31:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:31:16,505 INFO L225 Difference]: With dead ends: 342 [2024-11-23 23:31:16,505 INFO L226 Difference]: Without dead ends: 0 [2024-11-23 23:31:16,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:31:16,507 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 192 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:31:16,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 266 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 23:31:16,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-23 23:31:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-23 23:31:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-23 23:31:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-23 23:31:16,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 315 [2024-11-23 23:31:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:31:16,511 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 23:31:16,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2024-11-23 23:31:16,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-23 23:31:16,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-23 23:31:16,516 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-23 23:31:16,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:31:16,521 INFO L422 BasicCegarLoop]: Path program 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] [2024-11-23 23:31:16,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-23 23:31:22,464 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 23:31:22,485 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 [2024-11-23 23:31:22,486 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~error~0 [2024-11-23 23:31:22,491 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 [2024-11-23 23:31:22,491 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~error~0 [2024-11-23 23:31:22,492 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 [2024-11-23 23:31:22,492 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~error~0 [2024-11-23 23:31:22,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:31:22 BoogieIcfgContainer [2024-11-23 23:31:22,497 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 23:31:22,498 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 23:31:22,498 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 23:31:22,498 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 23:31:22,499 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:29:05" (3/4) ... [2024-11-23 23:31:22,503 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-23 23:31:22,511 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure kbtab_init [2024-11-23 23:31:22,511 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dev_get_drvdata [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure kfree [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usb_set_intfdata [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undefined_pointer [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printk [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usb_free_urb [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure input_set_abs_params [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure kbtab_exit [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure kzalloc [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_assume_stop [2024-11-23 23:31:22,512 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure usb_free_coherent [2024-11-23 23:31:22,513 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_blast_assert [2024-11-23 23:31:22,513 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dev_set_drvdata [2024-11-23 23:31:22,536 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2024-11-23 23:31:22,538 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-23 23:31:22,539 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-23 23:31:22,541 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-23 23:31:22,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-23 23:31:22,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-23 23:31:22,581 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 <= \old(ldv_coherent_state)) && (ldv_urb_state == 0)) && (ldv_coherent_state == 1)) && (\old(ldv_coherent_state) <= 1)) [2024-11-23 23:31:22,587 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(ldv_urb_state) <= 1) && (1 <= ldv_coherent_state)) && (0 == res_kbtab_probe_3)) && (1 <= \old(ldv_urb_state))) && (ldv_urb_state == 1)) && (ldv_coherent_state <= 1)) [2024-11-23 23:31:22,828 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 <= \old(ldv_coherent_state)) && (ldv_urb_state == 0)) && (ldv_coherent_state == 1)) && (\old(ldv_coherent_state) <= 1)) [2024-11-23 23:31:22,829 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(ldv_urb_state) <= 1) && (1 <= ldv_coherent_state)) && (0 == res_kbtab_probe_3)) && (1 <= \old(ldv_urb_state))) && (ldv_urb_state == 1)) && (ldv_coherent_state <= 1)) [2024-11-23 23:31:22,906 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 23:31:22,906 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 23:31:22,906 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 23:31:22,908 INFO L158 Benchmark]: Toolchain (without parser) took 145709.21ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 95.1MB in the beginning and 607.6MB in the end (delta: -512.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-23 23:31:22,912 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:31:22,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1533.45ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 83.8MB in the end (delta: 10.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.61ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 77.1MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,913 INFO L158 Benchmark]: Boogie Preprocessor took 234.31ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 60.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,913 INFO L158 Benchmark]: RCFGBuilder took 6245.98ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 60.3MB in the beginning and 217.3MB in the end (delta: -157.1MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,913 INFO L158 Benchmark]: TraceAbstraction took 137156.63ms. Allocated memory was 360.7MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 216.6MB in the beginning and 632.6MB in the end (delta: -416.0MB). Peak memory consumption was 874.6MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,913 INFO L158 Benchmark]: Witness Printer took 408.66ms. Allocated memory is still 1.7GB. Free memory was 632.6MB in the beginning and 607.6MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-23 23:31:22,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1533.45ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 83.8MB in the end (delta: 10.9MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.61ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 77.1MB in the end (delta: 6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 234.31ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 60.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 6245.98ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 60.3MB in the beginning and 217.3MB in the end (delta: -157.1MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * TraceAbstraction took 137156.63ms. Allocated memory was 360.7MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 216.6MB in the beginning and 632.6MB in the end (delta: -416.0MB). Peak memory consumption was 874.6MB. Max. memory is 16.1GB. * Witness Printer took 408.66ms. Allocated memory is still 1.7GB. Free memory was 632.6MB in the beginning and 607.6MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~error~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~error~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~ldv_s_kbtab_driver_usb_driver~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~error~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4049]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 202 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 131.1s, OverallIterations: 25, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 2968 SdHoareTripleChecker+Valid, 46.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2919 mSDsluCounter, 21503 SdHoareTripleChecker+Invalid, 45.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15422 mSDsCounter, 267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1358 IncrementalHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 267 mSolverCounterUnsat, 6081 mSDtfsCounter, 1358 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1430 GetRequests, 1316 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1679occurred in iteration=15, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 25 MinimizatonAttempts, 294 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 21.4s InterpolantComputationTime, 4200 NumberOfCodeBlocks, 4170 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 4368 ConstructedInterpolants, 0 QuantifiedInterpolants, 6774 SizeOfPredicates, 4 NumberOfNonLiveVariables, 16556 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 35 InterpolantComputations, 24 PerfectInterpolantSequences, 1723/1818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3981]: Location Invariant Derived location invariant: (((((0 == res_kbtab_probe_3) && (1 <= ldv_s_kbtab_driver_usb_driver)) && (ldv_coherent_state == 1)) && (ldv_urb_state == 1)) || ((((ldv_coherent_state == 0) && (0 == res_kbtab_probe_3)) && (ldv_urb_state == 0)) && (ldv_s_kbtab_driver_usb_driver == 0))) - InvariantResult [Line: 4156]: Loop Invariant Derived loop invariant: ((((((\old(ldv_urb_state) <= 1) && (1 <= ldv_coherent_state)) && (0 == res_kbtab_probe_3)) && (1 <= \old(ldv_urb_state))) && (ldv_urb_state == 1)) && (ldv_coherent_state <= 1)) - InvariantResult [Line: 4073]: Loop Invariant Derived loop invariant: (((ldv_coherent_state == 0) && (0 == res_kbtab_probe_3)) && (ldv_urb_state == 0)) - InvariantResult [Line: 4130]: Loop Invariant Derived loop invariant: (((0 == res_kbtab_probe_3) && (ldv_urb_state == 0)) && (ldv_coherent_state == 1)) - InvariantResult [Line: 3454]: Loop Invariant Derived loop invariant: (((0 == res_kbtab_probe_3) && (ldv_coherent_state == 1)) && (ldv_urb_state == 1)) - InvariantResult [Line: 4099]: Loop Invariant Derived loop invariant: ((((1 <= \old(ldv_coherent_state)) && (ldv_urb_state == 0)) && (ldv_coherent_state == 1)) && (\old(ldv_coherent_state) <= 1)) - InvariantResult [Line: 3968]: Location Invariant Derived location invariant: ((ldv_coherent_state == 0) && (ldv_urb_state == 0)) RESULT: Ultimate proved your program to be correct! [2024-11-23 23:31:23,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f091dd77-f97b-4f4e-ac1c-7400bf5eabee/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE