./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.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 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 01:35:11,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 01:35:11,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 01:35:11,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 01:35:11,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 01:35:11,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 01:35:11,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 01:35:11,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 01:35:11,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 01:35:11,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 01:35:11,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 01:35:11,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 01:35:11,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 01:35:11,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 01:35:11,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 01:35:11,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 01:35:11,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 01:35:11,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 01:35:11,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 01:35:11,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 01:35:11,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 01:35:11,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 01:35:11,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 01:35:11,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 01:35:11,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 01:35:11,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 01:35:11,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 01:35:11,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 01:35:11,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 01:35:11,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 01:35:11,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 01:35:11,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 01:35:11,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 01:35:11,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 01:35:11,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 01:35:11,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 01:35:11,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 01:35:11,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 01:35:11,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 01:35:11,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 01:35:11,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 01:35:11,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 01:35:11,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 01:35:11,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 01:35:11,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 01:35:11,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 01:35:11,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 01:35:11,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 01:35:11,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 01:35:11,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 01:35:11,952 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 01:35:11,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 01:35:11,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 01:35:11,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 01:35:11,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 01:35:11,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 01:35:11,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 01:35:11,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 01:35:11,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 01:35:11,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 01:35:11,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 01:35:11,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 01:35:11,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 01:35:11,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 01:35:11,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 01:35:11,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 01:35:11,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 01:35:11,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 01:35:11,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 01:35:11,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 01:35:11,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 01:35:11,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 01:35:11,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 01:35:11,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c3010ce5e1d1499df5a7edf91735fcbf8e6e49f56d21e0e77b6af352c375fd6 [2021-11-17 01:35:12,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 01:35:12,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 01:35:12,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 01:35:12,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 01:35:12,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 01:35:12,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-11-17 01:35:12,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f44c9a8c/3783d430856949ff897076aec1392101/FLAG59fce5a62 [2021-11-17 01:35:13,022 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 01:35:13,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-11-17 01:35:13,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f44c9a8c/3783d430856949ff897076aec1392101/FLAG59fce5a62 [2021-11-17 01:35:13,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f44c9a8c/3783d430856949ff897076aec1392101 [2021-11-17 01:35:13,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 01:35:13,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 01:35:13,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 01:35:13,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 01:35:13,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 01:35:13,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 01:35:13" (1/1) ... [2021-11-17 01:35:13,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa506ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:13, skipping insertion in model container [2021-11-17 01:35:13,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 01:35:13" (1/1) ... [2021-11-17 01:35:13,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 01:35:13,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 01:35:13,828 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2021-11-17 01:35:13,832 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2021-11-17 01:35:14,048 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2021-11-17 01:35:14,862 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 01:35:14,897 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 01:35:15,013 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4571] [2021-11-17 01:35:15,015 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4572-4573] [2021-11-17 01:35:15,022 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i[141860,141873] [2021-11-17 01:35:15,345 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 01:35:15,417 INFO L208 MainTranslator]: Completed translation [2021-11-17 01:35:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15 WrapperNode [2021-11-17 01:35:15,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 01:35:15,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 01:35:15,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 01:35:15,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 01:35:15,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,648 INFO L137 Inliner]: procedures = 250, calls = 2339, calls flagged for inlining = 129, calls inlined = 127, statements flattened = 6362 [2021-11-17 01:35:15,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 01:35:15,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 01:35:15,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 01:35:15,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 01:35:15,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 01:35:15,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 01:35:15,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 01:35:15,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 01:35:15,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (1/1) ... [2021-11-17 01:35:15,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 01:35:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 01:35:15,881 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) [2021-11-17 01:35:15,905 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 [2021-11-17 01:35:15,918 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_from_context [2021-11-17 01:35:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_from_context [2021-11-17 01:35:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-17 01:35:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 01:35:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 01:35:15,919 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-17 01:35:15,919 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-17 01:35:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 01:35:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 01:35:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_delete_hba [2021-11-17 01:35:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_delete_hba [2021-11-17 01:35:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-17 01:35:15,920 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-17 01:35:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-17 01:35:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-17 01:35:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-17 01:35:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-17 01:35:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-17 01:35:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-17 01:35:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 01:35:15,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 01:35:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_status_get [2021-11-17 01:35:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_status_get [2021-11-17 01:35:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_build_sys_table [2021-11-17 01:35:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_build_sys_table [2021-11-17 01:35:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-11-17 01:35:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-11-17 01:35:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_online_hba [2021-11-17 01:35:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_online_hba [2021-11-17 01:35:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2021-11-17 01:35:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2021-11-17 01:35:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure __scsi_iterate_devices [2021-11-17 01:35:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __scsi_iterate_devices [2021-11-17 01:35:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-17 01:35:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-17 01:35:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-17 01:35:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-17 01:35:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_2 [2021-11-17 01:35:15,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_2 [2021-11-17 01:35:15,924 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-17 01:35:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-17 01:35:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 01:35:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 01:35:15,925 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_query_scalar [2021-11-17 01:35:15,925 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_query_scalar [2021-11-17 01:35:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure dma_high [2021-11-17 01:35:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_high [2021-11-17 01:35:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-17 01:35:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-17 01:35:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 01:35:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 01:35:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_hba_reset [2021-11-17 01:35:15,927 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_hba_reset [2021-11-17 01:35:15,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 01:35:15,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 01:35:15,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-17 01:35:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-17 01:35:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-17 01:35:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-17 01:35:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 01:35:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 01:35:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 01:35:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-17 01:35:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-17 01:35:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 01:35:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-17 01:35:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-17 01:35:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_lct_get [2021-11-17 01:35:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_lct_get [2021-11-17 01:35:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-17 01:35:15,931 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-17 01:35:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 01:35:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 01:35:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-17 01:35:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-17 01:35:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reparse_lct [2021-11-17 01:35:15,932 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reparse_lct [2021-11-17 01:35:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-17 01:35:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-17 01:35:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_wait [2021-11-17 01:35:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_wait [2021-11-17 01:35:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 01:35:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 01:35:15,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 01:35:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-17 01:35:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-17 01:35:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure dma_low [2021-11-17 01:35:15,934 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_low [2021-11-17 01:35:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-17 01:35:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-17 01:35:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 01:35:15,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 01:35:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_adjust_queue_depth [2021-11-17 01:35:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_adjust_queue_depth [2021-11-17 01:35:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 01:35:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_activate_hba [2021-11-17 01:35:15,936 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_activate_hba [2021-11-17 01:35:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-17 01:35:15,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-17 01:35:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 01:35:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_ioctl [2021-11-17 01:35:15,937 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_ioctl [2021-11-17 01:35:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_reset_hba [2021-11-17 01:35:15,937 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_reset_hba [2021-11-17 01:35:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 01:35:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 01:35:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_read_blink_led [2021-11-17 01:35:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_read_blink_led [2021-11-17 01:35:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-17 01:35:15,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-17 01:35:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-17 01:35:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-17 01:35:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 01:35:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 01:35:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 01:35:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-17 01:35:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-17 01:35:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_send_nop [2021-11-17 01:35:15,942 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_send_nop [2021-11-17 01:35:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-17 01:35:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-17 01:35:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 01:35:15,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 01:35:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 01:35:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_install_device [2021-11-17 01:35:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_install_device [2021-11-17 01:35:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure dpt_dma64 [2021-11-17 01:35:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure dpt_dma64 [2021-11-17 01:35:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-17 01:35:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-17 01:35:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 01:35:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_cmd_to_context [2021-11-17 01:35:15,949 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_cmd_to_context [2021-11-17 01:35:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 01:35:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 01:35:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-17 01:35:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-17 01:35:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 01:35:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 01:35:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-17 01:35:15,950 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-17 01:35:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-17 01:35:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-17 01:35:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_set_state [2021-11-17 01:35:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_set_state [2021-11-17 01:35:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-11-17 01:35:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-11-17 01:35:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_online [2021-11-17 01:35:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_online [2021-11-17 01:35:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_post_this [2021-11-17 01:35:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_post_this [2021-11-17 01:35:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-17 01:35:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-17 01:35:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-17 01:35:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-17 01:35:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_sys_shutdown [2021-11-17 01:35:15,952 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_sys_shutdown [2021-11-17 01:35:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-17 01:35:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-17 01:35:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-17 01:35:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-17 01:35:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 01:35:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure adpt_i2o_report_hba_unit [2021-11-17 01:35:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure adpt_i2o_report_hba_unit [2021-11-17 01:35:15,953 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-17 01:35:15,953 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-17 01:35:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-17 01:35:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-17 01:35:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 01:35:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 01:35:15,954 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-17 01:35:15,954 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-17 01:35:16,749 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 01:35:16,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 01:35:17,239 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 01:35:30,081 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 01:35:30,096 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 01:35:30,096 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 01:35:30,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 01:35:30 BoogieIcfgContainer [2021-11-17 01:35:30,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 01:35:30,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 01:35:30,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 01:35:30,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 01:35:30,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 01:35:13" (1/3) ... [2021-11-17 01:35:30,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8686b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 01:35:30, skipping insertion in model container [2021-11-17 01:35:30,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 01:35:15" (2/3) ... [2021-11-17 01:35:30,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8686b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 01:35:30, skipping insertion in model container [2021-11-17 01:35:30,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 01:35:30" (3/3) ... [2021-11-17 01:35:30,106 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--dpt_i2o.ko-entry_point.cil.out.i [2021-11-17 01:35:30,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 01:35:30,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 01:35:30,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 01:35:30,159 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 [2021-11-17 01:35:30,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 01:35:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 1998 states, 1483 states have (on average 1.3917734322319621) internal successors, (2064), 1507 states have internal predecessors, (2064), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) [2021-11-17 01:35:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-17 01:35:30,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:35:30,211 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:35:30,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:35:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:35:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1716966273, now seen corresponding path program 1 times [2021-11-17 01:35:30,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:35:30,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794068352] [2021-11-17 01:35:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:35:30,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:35:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:35:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:35:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:35:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:35:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-17 01:35:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-17 01:35:30,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:35:30,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794068352] [2021-11-17 01:35:30,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794068352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:35:30,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:35:30,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 01:35:30,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232364059] [2021-11-17 01:35:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:35:30,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 01:35:30,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:35:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 01:35:30,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 01:35:30,793 INFO L87 Difference]: Start difference. First operand has 1998 states, 1483 states have (on average 1.3917734322319621) internal successors, (2064), 1507 states have internal predecessors, (2064), 437 states have call successors, (437), 77 states have call predecessors, (437), 76 states have return successors, (431), 430 states have call predecessors, (431), 431 states have call successors, (431) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 01:35:31,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:35,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:39,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:41,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:46,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:51,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:52,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:56,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:35:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:35:59,173 INFO L93 Difference]: Finished difference Result 6659 states and 10182 transitions. [2021-11-17 01:35:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 01:35:59,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-11-17 01:35:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:35:59,231 INFO L225 Difference]: With dead ends: 6659 [2021-11-17 01:35:59,231 INFO L226 Difference]: Without dead ends: 4615 [2021-11-17 01:35:59,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-17 01:35:59,314 INFO L933 BasicCegarLoop]: 3238 mSDtfsCounter, 4790 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 2772 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5147 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 6645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2772 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2021-11-17 01:35:59,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5147 Valid, 8403 Invalid, 6645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2772 Valid, 3867 Invalid, 6 Unknown, 0 Unchecked, 27.7s Time] [2021-11-17 01:35:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4615 states. [2021-11-17 01:35:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4615 to 3618. [2021-11-17 01:35:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 2687 states have (on average 1.384443617417194) internal successors, (3720), 2716 states have internal predecessors, (3720), 789 states have call successors, (789), 142 states have call predecessors, (789), 141 states have return successors, (788), 786 states have call predecessors, (788), 788 states have call successors, (788) [2021-11-17 01:35:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 5297 transitions. [2021-11-17 01:35:59,589 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 5297 transitions. Word has length 58 [2021-11-17 01:35:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:35:59,590 INFO L470 AbstractCegarLoop]: Abstraction has 3618 states and 5297 transitions. [2021-11-17 01:35:59,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-17 01:35:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 5297 transitions. [2021-11-17 01:35:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-17 01:35:59,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:35:59,597 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:35:59,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 01:35:59,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:35:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:35:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 543101132, now seen corresponding path program 1 times [2021-11-17 01:35:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:35:59,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975187669] [2021-11-17 01:35:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:35:59,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:35:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:35:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:35:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:35:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:35:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-17 01:35:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-17 01:35:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 01:35:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 01:35:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:35:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-17 01:35:59,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:35:59,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975187669] [2021-11-17 01:35:59,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975187669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:35:59,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:35:59,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 01:35:59,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658015294] [2021-11-17 01:35:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:35:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 01:35:59,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:35:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 01:35:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-17 01:35:59,886 INFO L87 Difference]: Start difference. First operand 3618 states and 5297 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 01:36:01,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:06,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:10,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:12,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:17,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:19,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:26,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:28,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:36:30,482 INFO L93 Difference]: Finished difference Result 9595 states and 14912 transitions. [2021-11-17 01:36:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 01:36:30,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-11-17 01:36:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:36:30,556 INFO L225 Difference]: With dead ends: 9595 [2021-11-17 01:36:30,557 INFO L226 Difference]: Without dead ends: 9592 [2021-11-17 01:36:30,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:36:30,568 INFO L933 BasicCegarLoop]: 3436 mSDtfsCounter, 5640 mSDsluCounter, 7192 mSDsCounter, 0 mSdLazyCounter, 5592 mSolverCounterSat, 3056 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6055 SdHoareTripleChecker+Valid, 10628 SdHoareTripleChecker+Invalid, 8654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3056 IncrementalHoareTripleChecker+Valid, 5592 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2021-11-17 01:36:30,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6055 Valid, 10628 Invalid, 8654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3056 Valid, 5592 Invalid, 6 Unknown, 0 Unchecked, 29.9s Time] [2021-11-17 01:36:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2021-11-17 01:36:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 7428. [2021-11-17 01:36:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 5506 states have (on average 1.3908463494369778) internal successors, (7658), 5570 states have internal predecessors, (7658), 1627 states have call successors, (1627), 271 states have call predecessors, (1627), 294 states have return successors, (1964), 1632 states have call predecessors, (1964), 1626 states have call successors, (1964) [2021-11-17 01:36:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 11249 transitions. [2021-11-17 01:36:30,959 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 11249 transitions. Word has length 84 [2021-11-17 01:36:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:36:30,961 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 11249 transitions. [2021-11-17 01:36:30,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-17 01:36:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 11249 transitions. [2021-11-17 01:36:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-17 01:36:30,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:36:30,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:36:30,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 01:36:30,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:36:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:36:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1033473605, now seen corresponding path program 1 times [2021-11-17 01:36:30,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:36:30,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517174459] [2021-11-17 01:36:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:36:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:36:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:36:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:36:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:36:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:36:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-17 01:36:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-17 01:36:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-17 01:36:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-17 01:36:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-17 01:36:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-17 01:36:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-17 01:36:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:36:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-17 01:36:31,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:36:31,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517174459] [2021-11-17 01:36:31,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517174459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:36:31,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:36:31,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 01:36:31,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115118874] [2021-11-17 01:36:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:36:31,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 01:36:31,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:36:31,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 01:36:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 01:36:31,270 INFO L87 Difference]: Start difference. First operand 7428 states and 11249 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 01:36:32,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:37,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:40,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:42,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:45,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:53,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:36:55,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:37:00,121 INFO L93 Difference]: Finished difference Result 27401 states and 42818 transitions. [2021-11-17 01:37:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-17 01:37:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2021-11-17 01:37:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:37:00,271 INFO L225 Difference]: With dead ends: 27401 [2021-11-17 01:37:00,272 INFO L226 Difference]: Without dead ends: 19984 [2021-11-17 01:37:00,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-17 01:37:00,350 INFO L933 BasicCegarLoop]: 3122 mSDtfsCounter, 7512 mSDsluCounter, 6513 mSDsCounter, 0 mSdLazyCounter, 5761 mSolverCounterSat, 5400 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7992 SdHoareTripleChecker+Valid, 9635 SdHoareTripleChecker+Invalid, 11166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5400 IncrementalHoareTripleChecker+Valid, 5761 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2021-11-17 01:37:00,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7992 Valid, 9635 Invalid, 11166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5400 Valid, 5761 Invalid, 5 Unknown, 0 Unchecked, 27.9s Time] [2021-11-17 01:37:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19984 states. [2021-11-17 01:37:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19984 to 15549. [2021-11-17 01:37:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15549 states, 11688 states have (on average 1.3963039014373717) internal successors, (16320), 11815 states have internal predecessors, (16320), 3282 states have call successors, (3282), 492 states have call predecessors, (3282), 578 states have return successors, (4014), 3327 states have call predecessors, (4014), 3281 states have call successors, (4014) [2021-11-17 01:37:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15549 states to 15549 states and 23616 transitions. [2021-11-17 01:37:01,300 INFO L78 Accepts]: Start accepts. Automaton has 15549 states and 23616 transitions. Word has length 103 [2021-11-17 01:37:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:37:01,300 INFO L470 AbstractCegarLoop]: Abstraction has 15549 states and 23616 transitions. [2021-11-17 01:37:01,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-17 01:37:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 15549 states and 23616 transitions. [2021-11-17 01:37:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-17 01:37:01,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:37:01,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:37:01,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 01:37:01,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:37:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:37:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -921436943, now seen corresponding path program 1 times [2021-11-17 01:37:01,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:37:01,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368983346] [2021-11-17 01:37:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:37:01,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:37:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:37:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:37:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:37:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:37:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-17 01:37:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 01:37:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 01:37:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-17 01:37:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-17 01:37:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 01:37:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 01:37:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-17 01:37:01,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:37:01,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368983346] [2021-11-17 01:37:01,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368983346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:37:01,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:37:01,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 01:37:01,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432133878] [2021-11-17 01:37:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:37:01,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 01:37:01,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:37:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 01:37:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:37:01,645 INFO L87 Difference]: Start difference. First operand 15549 states and 23616 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:37:03,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:09,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:13,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:15,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:21,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:29,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:32,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:34,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:36,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:37:43,876 INFO L93 Difference]: Finished difference Result 58445 states and 92933 transitions. [2021-11-17 01:37:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-17 01:37:43,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2021-11-17 01:37:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:37:44,401 INFO L225 Difference]: With dead ends: 58445 [2021-11-17 01:37:44,401 INFO L226 Difference]: Without dead ends: 42916 [2021-11-17 01:37:44,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 01:37:44,678 INFO L933 BasicCegarLoop]: 3009 mSDtfsCounter, 10614 mSDsluCounter, 13569 mSDsCounter, 0 mSdLazyCounter, 12539 mSolverCounterSat, 4375 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11074 SdHoareTripleChecker+Valid, 16578 SdHoareTripleChecker+Invalid, 16920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4375 IncrementalHoareTripleChecker+Valid, 12539 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2021-11-17 01:37:44,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11074 Valid, 16578 Invalid, 16920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4375 Valid, 12539 Invalid, 6 Unknown, 0 Unchecked, 40.3s Time] [2021-11-17 01:37:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42916 states. [2021-11-17 01:37:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42916 to 31024. [2021-11-17 01:37:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31024 states, 23321 states have (on average 1.3955233480554008) internal successors, (32545), 23591 states have internal predecessors, (32545), 6536 states have call successors, (6536), 977 states have call predecessors, (6536), 1166 states have return successors, (8364), 6627 states have call predecessors, (8364), 6535 states have call successors, (8364) [2021-11-17 01:37:47,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31024 states to 31024 states and 47445 transitions. [2021-11-17 01:37:47,051 INFO L78 Accepts]: Start accepts. Automaton has 31024 states and 47445 transitions. Word has length 117 [2021-11-17 01:37:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:37:47,058 INFO L470 AbstractCegarLoop]: Abstraction has 31024 states and 47445 transitions. [2021-11-17 01:37:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:37:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 31024 states and 47445 transitions. [2021-11-17 01:37:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-17 01:37:47,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:37:47,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:37:47,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 01:37:47,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:37:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:37:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash -144113110, now seen corresponding path program 1 times [2021-11-17 01:37:47,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:37:47,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780985186] [2021-11-17 01:37:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:37:47,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:37:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:37:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:37:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:37:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:37:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-17 01:37:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 01:37:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 01:37:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-17 01:37:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-17 01:37:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 01:37:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 01:37:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:37:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-17 01:37:47,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:37:47,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780985186] [2021-11-17 01:37:47,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780985186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:37:47,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:37:47,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 01:37:47,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563855082] [2021-11-17 01:37:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:37:47,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 01:37:47,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:37:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 01:37:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:37:47,560 INFO L87 Difference]: Start difference. First operand 31024 states and 47445 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:37:49,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:54,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:37:59,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:03,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:13,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:38:18,645 INFO L93 Difference]: Finished difference Result 116664 states and 187170 transitions. [2021-11-17 01:38:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-17 01:38:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 115 [2021-11-17 01:38:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:38:19,250 INFO L225 Difference]: With dead ends: 116664 [2021-11-17 01:38:19,251 INFO L226 Difference]: Without dead ends: 85660 [2021-11-17 01:38:19,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 01:38:19,660 INFO L933 BasicCegarLoop]: 3018 mSDtfsCounter, 12056 mSDsluCounter, 12941 mSDsCounter, 0 mSdLazyCounter, 10206 mSolverCounterSat, 7226 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12515 SdHoareTripleChecker+Valid, 15959 SdHoareTripleChecker+Invalid, 17435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7226 IncrementalHoareTripleChecker+Valid, 10206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-17 01:38:19,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12515 Valid, 15959 Invalid, 17435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7226 Valid, 10206 Invalid, 3 Unknown, 0 Unchecked, 27.3s Time] [2021-11-17 01:38:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85660 states. [2021-11-17 01:38:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85660 to 61942. [2021-11-17 01:38:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61942 states, 46555 states have (on average 1.3945440876382773) internal successors, (64923), 47111 states have internal predecessors, (64923), 13044 states have call successors, (13044), 1947 states have call predecessors, (13044), 2342 states have return successors, (17461), 13227 states have call predecessors, (17461), 13043 states have call successors, (17461) [2021-11-17 01:38:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61942 states to 61942 states and 95428 transitions. [2021-11-17 01:38:23,289 INFO L78 Accepts]: Start accepts. Automaton has 61942 states and 95428 transitions. Word has length 115 [2021-11-17 01:38:23,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:38:23,290 INFO L470 AbstractCegarLoop]: Abstraction has 61942 states and 95428 transitions. [2021-11-17 01:38:23,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:38:23,290 INFO L276 IsEmpty]: Start isEmpty. Operand 61942 states and 95428 transitions. [2021-11-17 01:38:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-17 01:38:23,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:38:23,299 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:38:23,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 01:38:23,300 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:38:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:38:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 123867907, now seen corresponding path program 1 times [2021-11-17 01:38:23,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:38:23,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544277487] [2021-11-17 01:38:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:38:23,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:38:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:38:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:38:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:38:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:38:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-17 01:38:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 01:38:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 01:38:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-17 01:38:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-17 01:38:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 01:38:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 01:38:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:38:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-17 01:38:23,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:38:23,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544277487] [2021-11-17 01:38:23,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544277487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:38:23,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:38:23,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 01:38:23,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102458270] [2021-11-17 01:38:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:38:23,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 01:38:23,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:38:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 01:38:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:38:23,868 INFO L87 Difference]: Start difference. First operand 61942 states and 95428 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:38:25,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:31,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:39,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:41,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:42,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:43,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:50,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:52,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:38:54,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:03,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:05,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:08,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:10,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:12,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:14,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:16,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:39:28,067 INFO L93 Difference]: Finished difference Result 233070 states and 377555 transitions. [2021-11-17 01:39:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-17 01:39:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 114 [2021-11-17 01:39:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:39:29,591 INFO L225 Difference]: With dead ends: 233070 [2021-11-17 01:39:29,592 INFO L226 Difference]: Without dead ends: 171148 [2021-11-17 01:39:30,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 01:39:30,218 INFO L933 BasicCegarLoop]: 3501 mSDtfsCounter, 10254 mSDsluCounter, 15483 mSDsCounter, 0 mSdLazyCounter, 13263 mSolverCounterSat, 4265 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10708 SdHoareTripleChecker+Valid, 18984 SdHoareTripleChecker+Invalid, 17541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4265 IncrementalHoareTripleChecker+Valid, 13263 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.5s IncrementalHoareTripleChecker+Time [2021-11-17 01:39:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10708 Valid, 18984 Invalid, 17541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4265 Valid, 13263 Invalid, 13 Unknown, 0 Unchecked, 56.5s Time] [2021-11-17 01:39:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171148 states. [2021-11-17 01:39:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171148 to 123586. [2021-11-17 01:39:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123586 states, 92831 states have (on average 1.3943510249808793) internal successors, (129439), 94087 states have internal predecessors, (129439), 26060 states have call successors, (26060), 3887 states have call predecessors, (26060), 4694 states have return successors, (36551), 26299 states have call predecessors, (36551), 26059 states have call successors, (36551) [2021-11-17 01:39:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123586 states to 123586 states and 192050 transitions. [2021-11-17 01:39:37,811 INFO L78 Accepts]: Start accepts. Automaton has 123586 states and 192050 transitions. Word has length 114 [2021-11-17 01:39:37,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 01:39:37,811 INFO L470 AbstractCegarLoop]: Abstraction has 123586 states and 192050 transitions. [2021-11-17 01:39:37,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:39:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 123586 states and 192050 transitions. [2021-11-17 01:39:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-17 01:39:37,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 01:39:37,826 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 01:39:37,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 01:39:37,827 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 01:39:37,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 01:39:37,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1590762838, now seen corresponding path program 1 times [2021-11-17 01:39:37,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 01:39:37,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865836364] [2021-11-17 01:39:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 01:39:37,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 01:39:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-17 01:39:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 01:39:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:37,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 01:39:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-17 01:39:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-17 01:39:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 01:39:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 01:39:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-17 01:39:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-17 01:39:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 01:39:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-17 01:39:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 01:39:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-17 01:39:38,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 01:39:38,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865836364] [2021-11-17 01:39:38,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865836364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 01:39:38,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 01:39:38,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-17 01:39:38,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387774758] [2021-11-17 01:39:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 01:39:38,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-17 01:39:38,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 01:39:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-17 01:39:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-17 01:39:38,075 INFO L87 Difference]: Start difference. First operand 123586 states and 192050 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-17 01:39:40,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:45,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:49,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:39:55,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:40:03,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:40:12,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:40:15,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 01:40:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 01:40:29,434 INFO L93 Difference]: Finished difference Result 465322 states and 762293 transitions. [2021-11-17 01:40:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-17 01:40:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 7 states have call predecessors, (17), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 116 [2021-11-17 01:40:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 01:40:33,556 INFO L225 Difference]: With dead ends: 465322 [2021-11-17 01:40:33,556 INFO L226 Difference]: Without dead ends: 335766 [2021-11-17 01:40:35,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2021-11-17 01:40:35,106 INFO L933 BasicCegarLoop]: 3055 mSDtfsCounter, 12595 mSDsluCounter, 12821 mSDsCounter, 0 mSdLazyCounter, 10265 mSolverCounterSat, 7259 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13051 SdHoareTripleChecker+Valid, 15876 SdHoareTripleChecker+Invalid, 17530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7259 IncrementalHoareTripleChecker+Valid, 10265 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2021-11-17 01:40:35,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13051 Valid, 15876 Invalid, 17530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7259 Valid, 10265 Invalid, 6 Unknown, 0 Unchecked, 33.8s Time] [2021-11-17 01:40:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335766 states.