./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-isdn-gigaset-gigaset.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-isdn-gigaset-gigaset.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 6344be269056834d180d9b5e1136d4ee678a64c336fe877230b0ca721a1da138 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:10:53,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:10:53,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:10:53,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:10:53,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:10:53,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:10:53,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:10:53,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:10:53,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:10:53,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:10:53,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:10:53,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:10:53,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:10:53,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:10:53,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:10:53,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:10:53,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:10:53,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:10:53,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:10:53,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:10:53,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:10:53,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:10:53,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:10:53,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:10:53,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:10:53,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:10:53,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:10:53,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:10:53,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:10:53,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:10:53,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:10:53,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:10:53,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:10:53,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:10:53,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:10:53,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:10:53,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:10:53,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:10:53,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:10:53,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:10:53,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:10:53,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:10:53,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:10:53,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:10:53,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:10:53,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:10:53,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:10:53,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:10:53,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:10:53,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:10:53,629 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:10:53,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:10:53,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:10:53,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:10:53,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:10:53,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:10:53,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:10:53,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:10:53,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:10:53,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:10:53,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:10:53,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:10:53,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:10:53,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:53,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:10:53,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:10:53,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:10:53,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:10:53,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:10:53,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:10:53,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:10:53,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:10:53,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:10:53,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6344be269056834d180d9b5e1136d4ee678a64c336fe877230b0ca721a1da138 [2021-12-14 17:10:53,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:10:53,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:10:53,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:10:53,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:10:53,927 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:10:53,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-isdn-gigaset-gigaset.ko.cil.out.i [2021-12-14 17:10:53,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f129483d5/7952dacbfdb245f5824050f3afbc40fe/FLAG3380dc72d [2021-12-14 17:10:54,791 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:10:54,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-isdn-gigaset-gigaset.ko.cil.out.i [2021-12-14 17:10:54,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f129483d5/7952dacbfdb245f5824050f3afbc40fe/FLAG3380dc72d [2021-12-14 17:10:54,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f129483d5/7952dacbfdb245f5824050f3afbc40fe [2021-12-14 17:10:54,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:10:54,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:10:54,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:54,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:10:54,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:10:54,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:54" (1/1) ... [2021-12-14 17:10:54,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674d3ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:54, skipping insertion in model container [2021-12-14 17:10:54,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:54" (1/1) ... [2021-12-14 17:10:55,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:10:55,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:10:57,004 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-isdn-gigaset-gigaset.ko.cil.out.i[190502,190515] [2021-12-14 17:10:57,635 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:57,639 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:57,640 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:57,643 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:58,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:58,881 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:10:59,099 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-isdn-gigaset-gigaset.ko.cil.out.i[190502,190515] [2021-12-14 17:10:59,207 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:59,209 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:59,210 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:59,212 WARN L1533 CHandler]: Possible shadowing of function abort [2021-12-14 17:10:59,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:59,642 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:10:59,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59 WrapperNode [2021-12-14 17:10:59,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:59,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:59,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:10:59,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:10:59,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:10:59,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:10:59,952 INFO L137 Inliner]: procedures = 352, calls = 6445, calls flagged for inlining = 152, calls inlined = 32, statements flattened = 4275 [2021-12-14 17:10:59,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:59,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:10:59,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:10:59,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:10:59,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:10:59,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:10:59,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:10:59,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:11:00,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:11:00,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:11:00,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:11:00,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:11:00,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:11:00,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:11:00,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:11:00,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (1/1) ... [2021-12-14 17:11:00,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:11:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:11:00,261 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) [2021-12-14 17:11:00,284 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 [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2021-12-14 17:11:00,326 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:11:00,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:11:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2021-12-14 17:11:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2021-12-14 17:11:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:11:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:11:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:11:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:11:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-14 17:11:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-14 17:11:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_3 [2021-12-14 17:11:00,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_3 [2021-12-14 17:11:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-14 17:11:00,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-14 17:11:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:11:00,328 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:11:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2021-12-14 17:11:00,328 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2021-12-14 17:11:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:11:00,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:11:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_enterconfigmode [2021-12-14 17:11:00,329 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_enterconfigmode [2021-12-14 17:11:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:11:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:11:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:11:00,329 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:11:00,329 INFO L130 BoogieDeclarations]: Found specification of procedure if_ioctl [2021-12-14 17:11:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure if_ioctl [2021-12-14 17:11:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-14 17:11:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-14 17:11:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:11:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:11:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:11:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:11:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure if_tiocmget [2021-12-14 17:11:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure if_tiocmget [2021-12-14 17:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:11:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:11:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure if_config [2021-12-14 17:11:00,331 INFO L138 BoogieDeclarations]: Found implementation of procedure if_config [2021-12-14 17:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:11:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure if_chars_in_buffer [2021-12-14 17:11:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure if_chars_in_buffer [2021-12-14 17:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure if_write_room [2021-12-14 17:11:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure if_write_room [2021-12-14 17:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure if_lock [2021-12-14 17:11:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure if_lock [2021-12-14 17:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:11:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure if_throttle [2021-12-14 17:11:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure if_throttle [2021-12-14 17:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-14 17:11:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-14 17:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:11:00,333 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2021-12-14 17:11:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2021-12-14 17:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:11:00,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:11:00,335 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-14 17:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 17:11:00,336 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 17:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:11:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:11:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:11:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:11:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-14 17:11:00,338 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-14 17:11:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure if_tiocmset [2021-12-14 17:11:00,338 INFO L138 BoogieDeclarations]: Found implementation of procedure if_tiocmset [2021-12-14 17:11:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-14 17:11:00,338 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-14 17:11:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure if_open [2021-12-14 17:11:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure if_open [2021-12-14 17:11:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:11:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:11:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure setflags [2021-12-14 17:11:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure setflags [2021-12-14 17:11:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:11:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:11:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure if_unthrottle [2021-12-14 17:11:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure if_unthrottle [2021-12-14 17:11:00,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:11:00,340 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 17:11:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 17:11:00,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:11:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:11:00,340 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:11:00,340 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:11:00,739 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:11:00,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:11:01,003 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-14 17:11:01,004 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-14 17:11:01,017 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:01,019 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:01,190 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume !false;call ULTIMATE.dealloc(if_version_~#version~0#1.base, if_version_~#version~0#1.offset);havoc if_version_~#version~0#1.base, if_version_~#version~0#1.offset;call ULTIMATE.dealloc(if_version_~#compat~0#1.base, if_version_~#compat~0#1.offset);havoc if_version_~#compat~0#1.base, if_version_~#compat~0#1.offset;call ULTIMATE.dealloc(if_version_~#__wait~4#1.base, if_version_~#__wait~4#1.offset);havoc if_version_~#__wait~4#1.base, if_version_~#__wait~4#1.offset; [2021-12-14 17:11:01,190 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume false; [2021-12-14 17:11:01,190 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume !false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##52: assume false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-12-14 17:11:01,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-12-14 17:11:01,192 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-12-14 17:11:01,192 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-12-14 17:11:01,305 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2021-12-14 17:11:01,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2021-12-14 17:11:01,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5012-1: ~tmp~4#1.base, ~tmp~4#1.offset := #t~ret76#1.base, #t~ret76#1.offset;havoc #t~ret76#1.base, #t~ret76#1.offset;~__ptr~0#1.base, ~__ptr~0#1.offset := ~tmp~4#1.base, ~tmp~4#1.offset; [2021-12-14 17:11:01,306 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5012: SUMMARY for call #t~ret76#1.base, #t~ret76#1.offset := get_current(); srcloc: null [2021-12-14 17:11:01,307 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:01,308 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:01,308 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:01,382 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-12-14 17:11:01,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-12-14 17:11:01,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume false; [2021-12-14 17:11:01,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume !false; [2021-12-14 17:11:01,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !false; [2021-12-14 17:11:01,383 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume false; [2021-12-14 17:11:01,558 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:54,114 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-14 17:11:54,114 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-14 17:11:54,130 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:11:54,143 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:11:54,144 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-14 17:11:54,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:54 BoogieIcfgContainer [2021-12-14 17:11:54,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:11:54,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:11:54,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:11:54,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:11:54,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:54" (1/3) ... [2021-12-14 17:11:54,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a290c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:54, skipping insertion in model container [2021-12-14 17:11:54,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59" (2/3) ... [2021-12-14 17:11:54,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a290c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:54, skipping insertion in model container [2021-12-14 17:11:54,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:54" (3/3) ... [2021-12-14 17:11:54,154 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-isdn-gigaset-gigaset.ko.cil.out.i [2021-12-14 17:11:54,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:11:54,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:11:54,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:11:54,248 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 [2021-12-14 17:11:54,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:11:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 662 states, 501 states have (on average 1.405189620758483) internal successors, (704), 514 states have internal predecessors, (704), 117 states have call successors, (117), 43 states have call predecessors, (117), 43 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2021-12-14 17:11:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 17:11:54,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:54,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:54,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1164007444, now seen corresponding path program 1 times [2021-12-14 17:11:54,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12604152] [2021-12-14 17:11:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:11:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:11:55,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:55,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12604152] [2021-12-14 17:11:55,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12604152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:55,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:55,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:11:55,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821565944] [2021-12-14 17:11:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:55,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:11:55,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:11:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:55,162 INFO L87 Difference]: Start difference. First operand has 662 states, 501 states have (on average 1.405189620758483) internal successors, (704), 514 states have internal predecessors, (704), 117 states have call successors, (117), 43 states have call predecessors, (117), 43 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:11:57,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:57,521 INFO L93 Difference]: Finished difference Result 2166 states and 3205 transitions. [2021-12-14 17:11:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:11:57,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-14 17:11:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:57,542 INFO L225 Difference]: With dead ends: 2166 [2021-12-14 17:11:57,542 INFO L226 Difference]: Without dead ends: 1501 [2021-12-14 17:11:57,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:11:57,556 INFO L933 BasicCegarLoop]: 1031 mSDtfsCounter, 1605 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:57,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 2177 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 17:11:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2021-12-14 17:11:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1392. [2021-12-14 17:11:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1063 states have (on average 1.3904045155221072) internal successors, (1478), 1087 states have internal predecessors, (1478), 237 states have call successors, (237), 85 states have call predecessors, (237), 91 states have return successors, (282), 239 states have call predecessors, (282), 235 states have call successors, (282) [2021-12-14 17:11:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1997 transitions. [2021-12-14 17:11:57,677 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1997 transitions. Word has length 22 [2021-12-14 17:11:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 1997 transitions. [2021-12-14 17:11:57,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:11:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1997 transitions. [2021-12-14 17:11:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 17:11:57,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:57,689 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:11:57,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:11:57,689 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:57,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1727764396, now seen corresponding path program 1 times [2021-12-14 17:11:57,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:57,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672106378] [2021-12-14 17:11:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:57,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:11:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 17:11:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:11:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:11:58,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:58,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672106378] [2021-12-14 17:11:58,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672106378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:58,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:58,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:11:58,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645099714] [2021-12-14 17:11:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:58,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:11:58,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:58,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:11:58,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:58,086 INFO L87 Difference]: Start difference. First operand 1392 states and 1997 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:11:59,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:12:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:00,151 INFO L93 Difference]: Finished difference Result 3053 states and 4444 transitions. [2021-12-14 17:12:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:12:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2021-12-14 17:12:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:00,162 INFO L225 Difference]: With dead ends: 3053 [2021-12-14 17:12:00,162 INFO L226 Difference]: Without dead ends: 1667 [2021-12-14 17:12:00,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:12:00,170 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 483 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:00,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 2004 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 17:12:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2021-12-14 17:12:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1561. [2021-12-14 17:12:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1196 states have (on average 1.4030100334448161) internal successors, (1678), 1226 states have internal predecessors, (1678), 273 states have call successors, (273), 85 states have call predecessors, (273), 91 states have return successors, (327), 273 states have call predecessors, (327), 271 states have call successors, (327) [2021-12-14 17:12:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2278 transitions. [2021-12-14 17:12:00,227 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2278 transitions. Word has length 42 [2021-12-14 17:12:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:00,228 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 2278 transitions. [2021-12-14 17:12:00,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:12:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2278 transitions. [2021-12-14 17:12:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 17:12:00,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:00,231 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:12:00,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:12:00,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2016306839, now seen corresponding path program 1 times [2021-12-14 17:12:00,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345058177] [2021-12-14 17:12:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:00,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:12:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:12:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:12:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:00,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:00,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345058177] [2021-12-14 17:12:00,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345058177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:00,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:00,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:00,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893101509] [2021-12-14 17:12:00,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:00,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:00,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:00,686 INFO L87 Difference]: Start difference. First operand 1561 states and 2278 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:12:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:03,864 INFO L93 Difference]: Finished difference Result 3311 states and 4968 transitions. [2021-12-14 17:12:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:12:03,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-12-14 17:12:03,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:03,873 INFO L225 Difference]: With dead ends: 3311 [2021-12-14 17:12:03,873 INFO L226 Difference]: Without dead ends: 1757 [2021-12-14 17:12:03,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:12:03,879 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1018 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:03,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 3978 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-14 17:12:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-12-14 17:12:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1543. [2021-12-14 17:12:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1170 states have (on average 1.3974358974358974) internal successors, (1635), 1199 states have internal predecessors, (1635), 278 states have call successors, (278), 85 states have call predecessors, (278), 94 states have return successors, (337), 284 states have call predecessors, (337), 276 states have call successors, (337) [2021-12-14 17:12:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2250 transitions. [2021-12-14 17:12:03,926 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2250 transitions. Word has length 47 [2021-12-14 17:12:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:03,926 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 2250 transitions. [2021-12-14 17:12:03,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:12:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2250 transitions. [2021-12-14 17:12:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 17:12:03,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:03,928 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:12:03,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:12:03,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2124098365, now seen corresponding path program 1 times [2021-12-14 17:12:03,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:03,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597133481] [2021-12-14 17:12:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:03,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:12:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:12:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:12:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:04,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:04,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597133481] [2021-12-14 17:12:04,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597133481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:04,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:04,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:12:04,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403360268] [2021-12-14 17:12:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:04,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:12:04,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:12:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:12:04,262 INFO L87 Difference]: Start difference. First operand 1543 states and 2250 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 17:12:07,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []