./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 1f1aff5e4c83d88c522badf0f4d59dd68712f74ddffe3a813d6da36b7733c959 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:04:39,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:04:39,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:04:39,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:04:39,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:04:39,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:04:39,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:04:39,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:04:39,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:04:39,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:04:39,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:04:39,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:04:39,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:04:39,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:04:39,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:04:39,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:04:39,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:04:39,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:04:39,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:04:39,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:04:39,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:04:39,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:04:39,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:04:39,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:04:39,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:04:39,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:04:39,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:04:39,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:04:39,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:04:39,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:04:39,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:04:39,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:04:39,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:04:39,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:04:39,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:04:39,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:04:39,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:04:39,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:04:39,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:04:39,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:04:39,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:04:39,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:04:39,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:04:39,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:04:39,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:04:39,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:04:39,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:04:39,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:04:39,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:04:39,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:04:39,170 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:04:39,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:04:39,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:04:39,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:04:39,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:04:39,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:04:39,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:04:39,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:04:39,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:04:39,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:04:39,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:04:39,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:04:39,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:04:39,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:04:39,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:04:39,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:04:39,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:04:39,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:04:39,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:04:39,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:04:39,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:04:39,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:04:39,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:04:39,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f1aff5e4c83d88c522badf0f4d59dd68712f74ddffe3a813d6da36b7733c959 [2021-12-22 14:04:39,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:04:39,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:04:39,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:04:39,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:04:39,455 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:04:39,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i [2021-12-22 14:04:39,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c1dde25/d1719bf11d7c4768b2d046ce4da67b8f/FLAG3fa4c77a8 [2021-12-22 14:04:40,230 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:04:40,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i [2021-12-22 14:04:40,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c1dde25/d1719bf11d7c4768b2d046ce4da67b8f/FLAG3fa4c77a8 [2021-12-22 14:04:40,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c1dde25/d1719bf11d7c4768b2d046ce4da67b8f [2021-12-22 14:04:40,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:04:40,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:04:40,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:04:40,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:04:40,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:04:40,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:04:40" (1/1) ... [2021-12-22 14:04:40,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75eefa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:40, skipping insertion in model container [2021-12-22 14:04:40,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:04:40" (1/1) ... [2021-12-22 14:04:40,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:04:40,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:04:41,472 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i[303043,303056] [2021-12-22 14:04:41,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:04:41,631 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:04:41,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i[303043,303056] [2021-12-22 14:04:41,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:04:41,987 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:04:41,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41 WrapperNode [2021-12-22 14:04:41,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:04:41,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:04:41,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:04:41,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:04:41,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,290 INFO L137 Inliner]: procedures = 148, calls = 4199, calls flagged for inlining = 65, calls inlined = 63, statements flattened = 5342 [2021-12-22 14:04:42,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:04:42,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:04:42,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:04:42,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:04:42,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:04:42,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:04:42,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:04:42,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:04:42,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (1/1) ... [2021-12-22 14:04:42,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:04:42,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:04:42,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:04:42,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:04:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-22 14:04:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-22 14:04:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-22 14:04:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-22 14:04:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:04:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:04:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure check_parms [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure check_parms [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_request_supply_msgs [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_request_supply_msgs [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure preaction_op [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure preaction_op [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_heartbeat [2021-12-22 14:04:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_heartbeat [2021-12-22 14:04:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_open [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_open [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure panic_smi_free [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure panic_smi_free [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_unregister_watchdog [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_unregister_watchdog [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_die_notifier [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_die_notifier [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:04:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:04:42,721 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:04:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure action_op [2021-12-22 14:04:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure action_op [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 14:04:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure panic_recv_free [2021-12-22 14:04:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure panic_recv_free [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-22 14:04:42,722 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:04:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-12-22 14:04:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-12-22 14:04:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-22 14:04:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-22 14:04:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:04:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure preop_op [2021-12-22 14:04:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure preop_op [2021-12-22 14:04:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_destroy_user [2021-12-22 14:04:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_destroy_user [2021-12-22 14:04:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-22 14:04:42,723 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-22 14:04:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:04:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:04:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:04:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_close [2021-12-22 14:04:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_close [2021-12-22 14:04:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_set_timeout [2021-12-22 14:04:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_set_timeout [2021-12-22 14:04:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:04:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-22 14:04:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-22 14:04:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-12-22 14:04:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-12-22 14:04:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_set_timeout [2021-12-22 14:04:42,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_set_timeout [2021-12-22 14:04:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll_interface [2021-12-22 14:04:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll_interface [2021-12-22 14:04:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-22 14:04:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-22 14:04:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_register_watchdog [2021-12-22 14:04:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_register_watchdog [2021-12-22 14:04:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-22 14:04:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-22 14:04:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:04:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-22 14:04:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-22 14:04:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:04:42,728 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:04:42,728 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:04:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_notifier_chain_unregister [2021-12-22 14:04:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_notifier_chain_unregister [2021-12-22 14:04:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 14:04:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 14:04:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:04:42,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:04:42,729 INFO L130 BoogieDeclarations]: Found specification of procedure panic_halt_ipmi_set_timeout [2021-12-22 14:04:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure panic_halt_ipmi_set_timeout [2021-12-22 14:04:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc_and_test [2021-12-22 14:04:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc_and_test [2021-12-22 14:04:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:04:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:04:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 14:04:42,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 14:04:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:04:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-22 14:04:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:04:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:04:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:04:42,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:04:43,190 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:04:43,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:04:43,891 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 14:04:43,891 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 14:04:44,024 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:04:44,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 14:04:44,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 14:04:44,183 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:04:44,188 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:04:44,189 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:05:24,704 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5860-1: ipmi_read_~tmp___0~5#1.base, ipmi_read_~tmp___0~5#1.offset := ipmi_read_#t~ret184#1.base, ipmi_read_#t~ret184#1.offset;havoc ipmi_read_#t~ret184#1.base, ipmi_read_#t~ret184#1.offset;ipmi_read_~__ptr~0#1.base, ipmi_read_~__ptr~0#1.offset := ipmi_read_~tmp___0~5#1.base, ipmi_read_~tmp___0~5#1.offset; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5860: SUMMARY for call ipmi_read_#t~ret184#1.base, ipmi_read_#t~ret184#1.offset := get_current(); srcloc: null [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##70: assume !false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##184: assume !false;call ULTIMATE.dealloc(ipmi_ioctl_~#val~0#1.base, ipmi_ioctl_~#val~0#1.offset);havoc ipmi_ioctl_~#val~0#1.base, ipmi_ioctl_~#val~0#1.offset; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##183: assume false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##69: assume false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##145: assume !false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume false; [2021-12-22 14:05:24,705 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##120: assume !false; [2021-12-22 14:05:24,718 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:05:24,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:05:24,753 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 14:05:24,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:24 BoogieIcfgContainer [2021-12-22 14:05:24,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:05:24,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:05:24,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:05:24,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:05:24,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:04:40" (1/3) ... [2021-12-22 14:05:24,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b039fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:24, skipping insertion in model container [2021-12-22 14:05:24,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:04:41" (2/3) ... [2021-12-22 14:05:24,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b039fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:24, skipping insertion in model container [2021-12-22 14:05:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:24" (3/3) ... [2021-12-22 14:05:24,780 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-char-ipmi-ipmi_watchdog.ko.cil.out.i [2021-12-22 14:05:24,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:05:24,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:05:24,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:05:24,866 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:05:24,866 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:05:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 671 states, 497 states have (on average 1.3782696177062375) internal successors, (685), 514 states have internal predecessors, (685), 130 states have call successors, (130), 43 states have call predecessors, (130), 43 states have return successors, (130), 125 states have call predecessors, (130), 130 states have call successors, (130) [2021-12-22 14:05:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 14:05:24,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:24,926 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:05:24,927 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2045978797, now seen corresponding path program 1 times [2021-12-22 14:05:24,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:24,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014090612] [2021-12-22 14:05:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:24,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:05:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:25,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:05:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:05:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:25,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014090612] [2021-12-22 14:05:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014090612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:25,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:25,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:05:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92058857] [2021-12-22 14:05:25,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:25,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:05:25,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:05:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:05:26,010 INFO L87 Difference]: Start difference. First operand has 671 states, 497 states have (on average 1.3782696177062375) internal successors, (685), 514 states have internal predecessors, (685), 130 states have call successors, (130), 43 states have call predecessors, (130), 43 states have return successors, (130), 125 states have call predecessors, (130), 130 states have call successors, (130) Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:05:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:30,590 INFO L93 Difference]: Finished difference Result 1394 states and 2009 transitions. [2021-12-22 14:05:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:05:30,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2021-12-22 14:05:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:30,609 INFO L225 Difference]: With dead ends: 1394 [2021-12-22 14:05:30,609 INFO L226 Difference]: Without dead ends: 723 [2021-12-22 14:05:30,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:05:30,622 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 898 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:30,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 2695 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-22 14:05:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-12-22 14:05:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 665. [2021-12-22 14:05:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 492 states have (on average 1.3719512195121952) internal successors, (675), 508 states have internal predecessors, (675), 130 states have call successors, (130), 43 states have call predecessors, (130), 42 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2021-12-22 14:05:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 934 transitions. [2021-12-22 14:05:30,710 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 934 transitions. Word has length 45 [2021-12-22 14:05:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:30,711 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 934 transitions. [2021-12-22 14:05:30,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:05:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 934 transitions. [2021-12-22 14:05:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 14:05:30,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:30,715 INFO L514 BasicCegarLoop]: 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] [2021-12-22 14:05:30,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:05:30,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -374513805, now seen corresponding path program 1 times [2021-12-22 14:05:30,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964068460] [2021-12-22 14:05:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:30,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:05:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:05:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:05:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:31,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:31,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964068460] [2021-12-22 14:05:31,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964068460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:31,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:31,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:05:31,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352406601] [2021-12-22 14:05:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:31,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:05:31,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:05:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:05:31,273 INFO L87 Difference]: Start difference. First operand 665 states and 934 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:05:35,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:05:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:37,171 INFO L93 Difference]: Finished difference Result 1017 states and 1500 transitions. [2021-12-22 14:05:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:05:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-12-22 14:05:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:37,179 INFO L225 Difference]: With dead ends: 1017 [2021-12-22 14:05:37,180 INFO L226 Difference]: Without dead ends: 1012 [2021-12-22 14:05:37,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:05:37,182 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 1812 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1011 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:37,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 3275 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 1505 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-12-22 14:05:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-12-22 14:05:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 667. [2021-12-22 14:05:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 494 states have (on average 1.3704453441295548) internal successors, (677), 510 states have internal predecessors, (677), 130 states have call successors, (130), 43 states have call predecessors, (130), 42 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2021-12-22 14:05:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 936 transitions. [2021-12-22 14:05:37,232 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 936 transitions. Word has length 46 [2021-12-22 14:05:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:37,233 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 936 transitions. [2021-12-22 14:05:37,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:05:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 936 transitions. [2021-12-22 14:05:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-22 14:05:37,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:37,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:05:37,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:05:37,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1247653024, now seen corresponding path program 1 times [2021-12-22 14:05:37,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:37,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453671634] [2021-12-22 14:05:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:37,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-22 14:05:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:05:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:05:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-22 14:05:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:05:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:37,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:37,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453671634] [2021-12-22 14:05:37,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453671634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:37,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:37,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:05:37,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140502188] [2021-12-22 14:05:37,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:37,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:05:37,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:05:37,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:05:37,923 INFO L87 Difference]: Start difference. First operand 667 states and 936 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:05:40,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:05:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:43,488 INFO L93 Difference]: Finished difference Result 721 states and 1029 transitions. [2021-12-22 14:05:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:05:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2021-12-22 14:05:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:43,489 INFO L225 Difference]: With dead ends: 721 [2021-12-22 14:05:43,489 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 14:05:43,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:05:43,493 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 1508 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:43,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 2313 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-22 14:05:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 14:05:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 14:05:43,494 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) [2021-12-22 14:05:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 14:05:43,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-12-22 14:05:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:43,495 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 14:05:43,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-22 14:05:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 14:05:43,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 14:05:43,498 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 14:05:43,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:05:43,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.