./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.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 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:09:57,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:09:57,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:09:57,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:09:57,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:09:57,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:09:57,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:09:57,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:09:57,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:09:57,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:09:57,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:09:57,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:09:57,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:09:57,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:09:57,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:09:57,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:09:57,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:09:57,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:09:57,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:09:57,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:09:57,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:09:57,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:09:57,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:09:57,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:09:57,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:09:57,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:09:57,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:09:57,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:09:57,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:09:57,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:09:57,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:09:57,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:09:57,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:09:57,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:09:57,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:09:57,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:09:57,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:09:57,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:09:57,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:09:57,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:09:57,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:09:57,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:09:57,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:09:57,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:09:57,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:09:57,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:09:57,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:09:57,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:09:57,940 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:09:57,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:09:57,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:09:57,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:09:57,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:09:57,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:09:57,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:09:57,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:09:57,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:09:57,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:09:57,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:09:57,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:09:57,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:09:57,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9be531e7af87cba73be4f8246e93f3d32963d00e421fc44d0f45559eac1d9e7a [2021-11-02 20:09:58,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:09:58,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:09:58,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:09:58,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:09:58,150 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:09:58,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2021-11-02 20:09:58,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29de93119/7fe9987e820f444b958eceb4651ae499/FLAG41f4cef4d [2021-11-02 20:09:58,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:09:58,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2021-11-02 20:09:58,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29de93119/7fe9987e820f444b958eceb4651ae499/FLAG41f4cef4d [2021-11-02 20:09:58,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29de93119/7fe9987e820f444b958eceb4651ae499 [2021-11-02 20:09:58,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:09:58,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:09:58,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:09:58,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:09:58,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:09:58,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:58" (1/1) ... [2021-11-02 20:09:58,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e14184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:58, skipping insertion in model container [2021-11-02 20:09:58,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:58" (1/1) ... [2021-11-02 20:09:58,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:09:59,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:10:00,723 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2021-11-02 20:10:00,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:10:00,823 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:10:01,177 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i[354644,354657] [2021-11-02 20:10:01,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:10:01,314 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:10:01,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01 WrapperNode [2021-11-02 20:10:01,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:10:01,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:10:01,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:10:01,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:10:01,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:01,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:02,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:10:02,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:10:02,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:10:02,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:10:02,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:02,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:02,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:02,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:03,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:03,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:03,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:03,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:10:03,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:10:03,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:10:03,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:10:03,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (1/1) ... [2021-11-02 20:10:03,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:10:03,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:10:03,747 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) [2021-11-02 20:10:03,768 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 [2021-11-02 20:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-02 20:10:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-02 20:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:10:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2021-11-02 20:10:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2021-11-02 20:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:10:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_srq [2021-11-02 20:10:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_srq [2021-11-02 20:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2021-11-02 20:10:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2021-11-02 20:10:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2021-11-02 20:10:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-02 20:10:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-02 20:10:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2021-11-02 20:10:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:10:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-02 20:10:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-02 20:10:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:10:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:10:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:10:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:10:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:10:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2021-11-02 20:10:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2021-11-02 20:10:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2021-11-02 20:10:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2021-11-02 20:10:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2021-11-02 20:10:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2021-11-02 20:10:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:10:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:10:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_qp [2021-11-02 20:10:03,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_qp [2021-11-02 20:10:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:10:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:10:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:10:10,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:10:10,916 INFO L299 CfgBuilder]: Removed 9079 assume(true) statements. [2021-11-02 20:10:10,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:10 BoogieIcfgContainer [2021-11-02 20:10:10,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:10:10,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:10:10,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:10:10,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:10:10,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:09:58" (1/3) ... [2021-11-02 20:10:10,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fbf0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:10, skipping insertion in model container [2021-11-02 20:10:10,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:01" (2/3) ... [2021-11-02 20:10:10,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fbf0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:10, skipping insertion in model container [2021-11-02 20:10:10,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:10" (3/3) ... [2021-11-02 20:10:10,927 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2021-11-02 20:10:10,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:10:10,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 20:10:10,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:10:11,003 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 [2021-11-02 20:10:11,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 20:10:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 7835 states, 7646 states have (on average 1.3808527334554015) internal successors, (10558), 7654 states have internal predecessors, (10558), 168 states have call successors, (168), 15 states have call predecessors, (168), 15 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-02 20:10:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 20:10:11,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:10:11,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:10:11,116 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:10:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:10:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1001547020, now seen corresponding path program 1 times [2021-11-02 20:10:11,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:10:11,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054398884] [2021-11-02 20:10:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:10:11,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:10:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:10:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:10:11,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:10:11,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054398884] [2021-11-02 20:10:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054398884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:10:11,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:10:11,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:10:11,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378434862] [2021-11-02 20:10:11,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:10:11,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:10:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:10:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:10:11,675 INFO L87 Difference]: Start difference. First operand has 7835 states, 7646 states have (on average 1.3808527334554015) internal successors, (10558), 7654 states have internal predecessors, (10558), 168 states have call successors, (168), 15 states have call predecessors, (168), 15 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:15,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:23,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:25,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:28,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:32,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:35,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:38,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:43,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:10:47,696 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 [] [2021-11-02 20:10:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:10:47,949 INFO L93 Difference]: Finished difference Result 15666 states and 21951 transitions. [2021-11-02 20:10:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:10:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-02 20:10:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:10:47,989 INFO L225 Difference]: With dead ends: 15666 [2021-11-02 20:10:47,990 INFO L226 Difference]: Without dead ends: 7822 [2021-11-02 20:10:48,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:10:48,021 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10354 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33541.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 10362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10354 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35778.19ms IncrementalHoareTripleChecker+Time [2021-11-02 20:10:48,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 10362 Unknown, 0 Unchecked, 18.23ms Time], IncrementalHoareTripleChecker [0 Valid, 10354 Invalid, 8 Unknown, 0 Unchecked, 35778.19ms Time] [2021-11-02 20:10:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-11-02 20:10:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 7822. [2021-11-02 20:10:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7634 states have (on average 1.355645795127063) internal successors, (10349), 7641 states have internal predecessors, (10349), 168 states have call successors, (168), 15 states have call predecessors, (168), 15 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-02 20:10:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 10685 transitions. [2021-11-02 20:10:48,268 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 10685 transitions. Word has length 123 [2021-11-02 20:10:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:10:48,269 INFO L470 AbstractCegarLoop]: Abstraction has 7822 states and 10685 transitions. [2021-11-02 20:10:48,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 10685 transitions. [2021-11-02 20:10:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 20:10:48,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:10:48,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:10:48,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:10:48,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:10:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:10:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1568801746, now seen corresponding path program 1 times [2021-11-02 20:10:48,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:10:48,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285079109] [2021-11-02 20:10:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:10:48,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:10:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:10:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:10:48,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:10:48,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285079109] [2021-11-02 20:10:48,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285079109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:10:48,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:10:48,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:10:48,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119361697] [2021-11-02 20:10:48,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:10:48,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:10:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:10:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:10:48,616 INFO L87 Difference]: Start difference. First operand 7822 states and 10685 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:10:50,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:14,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:17,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:21,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:27,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:28,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:32,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:38,100 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:45,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:11:52,559 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 [] [2021-11-02 20:11:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:11:53,070 INFO L93 Difference]: Finished difference Result 15578 states and 21309 transitions. [2021-11-02 20:11:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:11:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-02 20:11:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:11:53,104 INFO L225 Difference]: With dead ends: 15578 [2021-11-02 20:11:53,105 INFO L226 Difference]: Without dead ends: 7828 [2021-11-02 20:11:53,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:53,126 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 0 mSDsluCounter, 10645 mSDsCounter, 0 mSdLazyCounter, 20677 mSolverCounterSat, 10 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59686.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 20695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.88ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20677 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63720.39ms IncrementalHoareTripleChecker+Time [2021-11-02 20:11:53,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 20695 Unknown, 0 Unchecked, 80.88ms Time], IncrementalHoareTripleChecker [10 Valid, 20677 Invalid, 8 Unknown, 0 Unchecked, 63720.39ms Time] [2021-11-02 20:11:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2021-11-02 20:11:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7828. [2021-11-02 20:11:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7828 states, 7640 states have (on average 1.3553664921465969) internal successors, (10355), 7647 states have internal predecessors, (10355), 168 states have call successors, (168), 15 states have call predecessors, (168), 15 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-02 20:11:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7828 states to 7828 states and 10691 transitions. [2021-11-02 20:11:53,333 INFO L78 Accepts]: Start accepts. Automaton has 7828 states and 10691 transitions. Word has length 123 [2021-11-02 20:11:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:11:53,334 INFO L470 AbstractCegarLoop]: Abstraction has 7828 states and 10691 transitions. [2021-11-02 20:11:53,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:11:53,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7828 states and 10691 transitions. [2021-11-02 20:11:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 20:11:53,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:11:53,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:11:53,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:11:53,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:11:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:11:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1756416202, now seen corresponding path program 1 times [2021-11-02 20:11:53,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:11:53,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637830826] [2021-11-02 20:11:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:11:53,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:11:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:11:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 20:11:53,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:11:53,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637830826] [2021-11-02 20:11:53,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637830826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:11:53,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:11:53,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:11:53,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574793974] [2021-11-02 20:11:53,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:11:53,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:11:53,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:11:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:11:53,607 INFO L87 Difference]: Start difference. First operand 7828 states and 10691 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:12:00,991 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 [] [2021-11-02 20:12:21,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:23,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:29,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:35,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:36,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:41,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:46,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:48,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:53,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:12:54,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:02,158 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 [] [2021-11-02 20:13:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:13:02,590 INFO L93 Difference]: Finished difference Result 15581 states and 21309 transitions. [2021-11-02 20:13:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:13:02,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-02 20:13:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:13:02,620 INFO L225 Difference]: With dead ends: 15581 [2021-11-02 20:13:02,621 INFO L226 Difference]: Without dead ends: 7833 [2021-11-02 20:13:02,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:02,642 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 0 mSDsluCounter, 10646 mSDsCounter, 0 mSdLazyCounter, 20681 mSolverCounterSat, 8 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63611.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 20695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 97.75ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20681 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68241.92ms IncrementalHoareTripleChecker+Time [2021-11-02 20:13:02,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 20695 Unknown, 0 Unchecked, 97.75ms Time], IncrementalHoareTripleChecker [8 Valid, 20681 Invalid, 6 Unknown, 0 Unchecked, 68241.92ms Time] [2021-11-02 20:13:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2021-11-02 20:13:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 7833. [2021-11-02 20:13:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7833 states, 7645 states have (on average 1.355134074558535) internal successors, (10360), 7652 states have internal predecessors, (10360), 168 states have call successors, (168), 15 states have call predecessors, (168), 15 states have return successors, (168), 166 states have call predecessors, (168), 168 states have call successors, (168) [2021-11-02 20:13:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7833 states to 7833 states and 10696 transitions. [2021-11-02 20:13:02,826 INFO L78 Accepts]: Start accepts. Automaton has 7833 states and 10696 transitions. Word has length 129 [2021-11-02 20:13:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:13:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 7833 states and 10696 transitions. [2021-11-02 20:13:02,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 7833 states and 10696 transitions. [2021-11-02 20:13:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 20:13:02,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:13:02,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:13:02,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:13:02,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:13:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:13:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1018270731, now seen corresponding path program 1 times [2021-11-02 20:13:02,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:13:02,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049731879] [2021-11-02 20:13:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:13:02,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:13:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:13:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:13:03,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:13:03,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049731879] [2021-11-02 20:13:03,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049731879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:13:03,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:13:03,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:13:03,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123086461] [2021-11-02 20:13:03,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:13:03,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:13:03,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:13:03,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:13:03,189 INFO L87 Difference]: Start difference. First operand 7833 states and 10696 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:13:08,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:22,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:25,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:30,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:31,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:42,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:49,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:57,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:13:58,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:11,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:22,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:14:23,133 INFO L93 Difference]: Finished difference Result 23044 states and 31714 transitions. [2021-11-02 20:14:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:14:23,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-02 20:14:23,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:14:23,184 INFO L225 Difference]: With dead ends: 23044 [2021-11-02 20:14:23,184 INFO L226 Difference]: Without dead ends: 15312 [2021-11-02 20:14:23,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:14:23,217 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 10237 mSDsluCounter, 10567 mSDsCounter, 0 mSdLazyCounter, 20571 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72846.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10237 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 20582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20571 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78852.46ms IncrementalHoareTripleChecker+Time [2021-11-02 20:14:23,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10237 Valid, 852 Invalid, 20582 Unknown, 0 Unchecked, 74.95ms Time], IncrementalHoareTripleChecker [4 Valid, 20571 Invalid, 7 Unknown, 0 Unchecked, 78852.46ms Time] [2021-11-02 20:14:23,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-11-02 20:14:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 15297. [2021-11-02 20:14:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15297 states, 14933 states have (on average 1.3574633362351838) internal successors, (20271), 14943 states have internal predecessors, (20271), 329 states have call successors, (329), 30 states have call predecessors, (329), 30 states have return successors, (348), 325 states have call predecessors, (348), 329 states have call successors, (348) [2021-11-02 20:14:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15297 states to 15297 states and 20948 transitions. [2021-11-02 20:14:23,522 INFO L78 Accepts]: Start accepts. Automaton has 15297 states and 20948 transitions. Word has length 134 [2021-11-02 20:14:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:14:23,524 INFO L470 AbstractCegarLoop]: Abstraction has 15297 states and 20948 transitions. [2021-11-02 20:14:23,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:14:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 15297 states and 20948 transitions. [2021-11-02 20:14:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 20:14:23,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:14:23,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:14:23,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:14:23,527 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:14:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:14:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 239641131, now seen corresponding path program 1 times [2021-11-02 20:14:23,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:14:23,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283080761] [2021-11-02 20:14:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:14:23,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:14:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:14:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:14:23,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:14:23,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283080761] [2021-11-02 20:14:23,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283080761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:14:23,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:14:23,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:14:23,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29830060] [2021-11-02 20:14:23,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:14:23,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:14:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:14:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:14:23,756 INFO L87 Difference]: Start difference. First operand 15297 states and 20948 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:14:42,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:45,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:50,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:53,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:14:58,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:03,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:07,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:11,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:16,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:19,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:26,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:15:28,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:03,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:13,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:16:14,743 INFO L93 Difference]: Finished difference Result 45198 states and 62643 transitions. [2021-11-02 20:16:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:16:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-02 20:16:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:16:14,831 INFO L225 Difference]: With dead ends: 45198 [2021-11-02 20:16:14,831 INFO L226 Difference]: Without dead ends: 30016 [2021-11-02 20:16:14,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:14,866 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 10433 mSDsluCounter, 10695 mSDsCounter, 0 mSdLazyCounter, 20733 mSolverCounterSat, 5 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98050.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10433 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 20747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20733 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109150.84ms IncrementalHoareTripleChecker+Time [2021-11-02 20:16:14,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10433 Valid, 1173 Invalid, 20747 Unknown, 0 Unchecked, 112.19ms Time], IncrementalHoareTripleChecker [5 Valid, 20733 Invalid, 9 Unknown, 0 Unchecked, 109150.84ms Time] [2021-11-02 20:16:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30016 states. [2021-11-02 20:16:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30016 to 29962. [2021-11-02 20:16:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29962 states, 29249 states have (on average 1.3593969024582038) internal successors, (39761), 29261 states have internal predecessors, (39761), 648 states have call successors, (648), 60 states have call predecessors, (648), 60 states have return successors, (1356), 644 states have call predecessors, (1356), 648 states have call successors, (1356) [2021-11-02 20:16:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29962 states to 29962 states and 41765 transitions. [2021-11-02 20:16:15,768 INFO L78 Accepts]: Start accepts. Automaton has 29962 states and 41765 transitions. Word has length 145 [2021-11-02 20:16:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:16:15,769 INFO L470 AbstractCegarLoop]: Abstraction has 29962 states and 41765 transitions. [2021-11-02 20:16:15,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:15,769 INFO L276 IsEmpty]: Start isEmpty. Operand 29962 states and 41765 transitions. [2021-11-02 20:16:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-02 20:16:15,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:16:15,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:16:15,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:16:15,772 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:16:15,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:16:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash 577318326, now seen corresponding path program 1 times [2021-11-02 20:16:15,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:16:15,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128083117] [2021-11-02 20:16:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:16:15,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:16:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:16:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:16:16,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:16:16,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128083117] [2021-11-02 20:16:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128083117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:16:16,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:16:16,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:16:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428370121] [2021-11-02 20:16:16,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:16:16,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:16:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:16:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:16:16,022 INFO L87 Difference]: Start difference. First operand 29962 states and 41765 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:16:40,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:43,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:49,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:16:57,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:01,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:07,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:09,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:12,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:16,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:57,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:17:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:17:58,715 INFO L93 Difference]: Finished difference Result 73015 states and 101827 transitions. [2021-11-02 20:17:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:17:58,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-02 20:17:58,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:17:58,843 INFO L225 Difference]: With dead ends: 73015 [2021-11-02 20:17:58,843 INFO L226 Difference]: Without dead ends: 43168 [2021-11-02 20:17:58,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:17:58,921 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 10233 mSDsluCounter, 9499 mSDsCounter, 0 mSdLazyCounter, 19436 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89421.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10236 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 19445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19436 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100721.93ms IncrementalHoareTripleChecker+Time [2021-11-02 20:17:58,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10236 Valid, 751 Invalid, 19445 Unknown, 0 Unchecked, 95.17ms Time], IncrementalHoareTripleChecker [1 Valid, 19436 Invalid, 8 Unknown, 0 Unchecked, 100721.93ms Time] [2021-11-02 20:17:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43168 states. [2021-11-02 20:17:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43168 to 43140. [2021-11-02 20:17:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43140 states, 42112 states have (on average 1.3606810410334347) internal successors, (57301), 42135 states have internal predecessors, (57301), 925 states have call successors, (925), 98 states have call predecessors, (925), 98 states have return successors, (1926), 914 states have call predecessors, (1926), 925 states have call successors, (1926) [2021-11-02 20:17:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43140 states to 43140 states and 60152 transitions. [2021-11-02 20:17:59,949 INFO L78 Accepts]: Start accepts. Automaton has 43140 states and 60152 transitions. Word has length 147 [2021-11-02 20:17:59,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:17:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 43140 states and 60152 transitions. [2021-11-02 20:17:59,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:17:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 43140 states and 60152 transitions. [2021-11-02 20:17:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 20:17:59,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:17:59,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:17:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 20:17:59,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:17:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:17:59,956 INFO L85 PathProgramCache]: Analyzing trace with hash 197140240, now seen corresponding path program 1 times [2021-11-02 20:17:59,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:17:59,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580399914] [2021-11-02 20:17:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:17:59,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:18:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:18:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:18:00,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:18:00,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580399914] [2021-11-02 20:18:00,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580399914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:18:00,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:18:00,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:18:00,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201014806] [2021-11-02 20:18:00,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:18:00,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:18:00,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:18:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:18:00,139 INFO L87 Difference]: Start difference. First operand 43140 states and 60152 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:18:05,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:17,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:20,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:23,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:29,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:35,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:39,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:44,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:18:50,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:12,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:23,064 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 [] [2021-11-02 20:19:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:19:23,975 INFO L93 Difference]: Finished difference Result 85215 states and 118865 transitions. [2021-11-02 20:19:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:19:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 20:19:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:19:24,092 INFO L225 Difference]: With dead ends: 85215 [2021-11-02 20:19:24,093 INFO L226 Difference]: Without dead ends: 42190 [2021-11-02 20:19:24,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:19:24,178 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 9133 mSDsluCounter, 9499 mSDsCounter, 0 mSdLazyCounter, 18924 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74104.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9136 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 18933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 262.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18924 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82173.45ms IncrementalHoareTripleChecker+Time [2021-11-02 20:19:24,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9136 Valid, 709 Invalid, 18933 Unknown, 0 Unchecked, 262.53ms Time], IncrementalHoareTripleChecker [1 Valid, 18924 Invalid, 8 Unknown, 0 Unchecked, 82173.45ms Time] [2021-11-02 20:19:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42190 states. [2021-11-02 20:19:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42190 to 42166. [2021-11-02 20:19:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42166 states, 41128 states have (on average 1.3622836024119822) internal successors, (56028), 41165 states have internal predecessors, (56028), 907 states have call successors, (907), 126 states have call predecessors, (907), 128 states have return successors, (1870), 888 states have call predecessors, (1870), 907 states have call successors, (1870) [2021-11-02 20:19:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42166 states to 42166 states and 58805 transitions. [2021-11-02 20:19:25,311 INFO L78 Accepts]: Start accepts. Automaton has 42166 states and 58805 transitions. Word has length 153 [2021-11-02 20:19:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:19:25,311 INFO L470 AbstractCegarLoop]: Abstraction has 42166 states and 58805 transitions. [2021-11-02 20:19:25,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:19:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 42166 states and 58805 transitions. [2021-11-02 20:19:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-02 20:19:25,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:19:25,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:19:25,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 20:19:25,313 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:19:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:19:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1572700647, now seen corresponding path program 1 times [2021-11-02 20:19:25,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:19:25,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47630097] [2021-11-02 20:19:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:19:25,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:19:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:19:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:19:25,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:19:25,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47630097] [2021-11-02 20:19:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47630097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:19:25,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:19:25,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:19:25,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225073833] [2021-11-02 20:19:25,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:19:25,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:19:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:19:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:19:25,497 INFO L87 Difference]: Start difference. First operand 42166 states and 58805 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:19:32,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:19:36,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:04,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:08,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:17,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:29,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:36,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:42,156 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:46,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:48,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:56,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:20:59,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:14,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:21:16,047 INFO L93 Difference]: Finished difference Result 112598 states and 157061 transitions. [2021-11-02 20:21:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:21:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-02 20:21:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:21:16,232 INFO L225 Difference]: With dead ends: 112598 [2021-11-02 20:21:16,233 INFO L226 Difference]: Without dead ends: 70547 [2021-11-02 20:21:16,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:21:16,319 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 9680 mSDsluCounter, 9884 mSDsCounter, 0 mSdLazyCounter, 28493 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97279.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9683 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 28502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28493 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108444.86ms IncrementalHoareTripleChecker+Time [2021-11-02 20:21:16,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9683 Valid, 882 Invalid, 28502 Unknown, 0 Unchecked, 77.91ms Time], IncrementalHoareTripleChecker [2 Valid, 28493 Invalid, 7 Unknown, 0 Unchecked, 108444.86ms Time] [2021-11-02 20:21:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70547 states. [2021-11-02 20:21:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70547 to 70518. [2021-11-02 20:21:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70518 states, 68760 states have (on average 1.3621436881908087) internal successors, (93661), 68829 states have internal predecessors, (93661), 1525 states have call successors, (1525), 226 states have call predecessors, (1525), 230 states have return successors, (3162), 1488 states have call predecessors, (3162), 1525 states have call successors, (3162) [2021-11-02 20:21:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70518 states to 70518 states and 98348 transitions. [2021-11-02 20:21:18,003 INFO L78 Accepts]: Start accepts. Automaton has 70518 states and 98348 transitions. Word has length 159 [2021-11-02 20:21:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:21:18,004 INFO L470 AbstractCegarLoop]: Abstraction has 70518 states and 98348 transitions. [2021-11-02 20:21:18,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:21:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 70518 states and 98348 transitions. [2021-11-02 20:21:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-02 20:21:18,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:21:18,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:21:18,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 20:21:18,006 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:21:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:21:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 348184616, now seen corresponding path program 1 times [2021-11-02 20:21:18,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:21:18,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739130929] [2021-11-02 20:21:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:21:18,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:21:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:21:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 20:21:18,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:21:18,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739130929] [2021-11-02 20:21:18,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739130929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:21:18,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:21:18,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:21:18,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518388240] [2021-11-02 20:21:18,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:21:18,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:21:18,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:21:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:21:18,224 INFO L87 Difference]: Start difference. First operand 70518 states and 98348 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:21:19,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:26,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:41,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:54,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:21:58,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:07,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:13,681 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:20,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:28,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:32,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:40,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:22:51,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:23:13,009 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 [] [2021-11-02 20:23:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:23:14,971 INFO L93 Difference]: Finished difference Result 168826 states and 235547 transitions. [2021-11-02 20:23:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:23:14,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-02 20:23:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:23:15,254 INFO L225 Difference]: With dead ends: 168826 [2021-11-02 20:23:15,255 INFO L226 Difference]: Without dead ends: 98423 [2021-11-02 20:23:15,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:23:15,409 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 9561 mSDsluCounter, 9989 mSDsCounter, 0 mSdLazyCounter, 28573 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101171.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9564 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 28585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28573 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113844.42ms IncrementalHoareTripleChecker+Time [2021-11-02 20:23:15,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9564 Valid, 873 Invalid, 28585 Unknown, 0 Unchecked, 76.11ms Time], IncrementalHoareTripleChecker [4 Valid, 28573 Invalid, 8 Unknown, 0 Unchecked, 113844.42ms Time] [2021-11-02 20:23:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98423 states. [2021-11-02 20:23:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98423 to 98394. [2021-11-02 20:23:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98394 states, 95972 states have (on average 1.3626265994248323) internal successors, (130774), 96063 states have internal predecessors, (130774), 2111 states have call successors, (2111), 302 states have call predecessors, (2111), 308 states have return successors, (4398), 2062 states have call predecessors, (4398), 2111 states have call successors, (4398) [2021-11-02 20:23:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98394 states to 98394 states and 137283 transitions. [2021-11-02 20:23:18,036 INFO L78 Accepts]: Start accepts. Automaton has 98394 states and 137283 transitions. Word has length 181 [2021-11-02 20:23:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:23:18,036 INFO L470 AbstractCegarLoop]: Abstraction has 98394 states and 137283 transitions. [2021-11-02 20:23:18,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:23:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 98394 states and 137283 transitions. [2021-11-02 20:23:18,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 20:23:18,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:23:18,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:23:18,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 20:23:18,041 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION === [ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 20:23:18,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:23:18,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1803346570, now seen corresponding path program 1 times [2021-11-02 20:23:18,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:23:18,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890973271] [2021-11-02 20:23:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:23:18,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:23:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:23:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 20:23:18,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:23:18,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890973271] [2021-11-02 20:23:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890973271] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 20:23:18,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016982251] [2021-11-02 20:23:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:23:18,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 20:23:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:23:18,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 20:23:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 20:23:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:23:20,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 4438 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 20:23:20,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 20:23:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 20:23:20,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 20:23:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 20:23:21,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016982251] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 20:23:21,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 20:23:21,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 20:23:21,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160948603] [2021-11-02 20:23:21,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 20:23:21,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:23:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 20:23:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 20:23:21,073 INFO L87 Difference]: Start difference. First operand 98394 states and 137283 transitions. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:23:41,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15