/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -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 -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:55:33,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:55:33,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:55:33,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:55:33,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:55:33,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:55:33,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:55:33,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:55:33,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:55:33,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:55:33,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:55:33,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:55:33,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:55:33,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:55:33,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:55:33,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:55:33,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:55:33,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:55:33,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:55:33,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:55:33,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:55:33,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:55:33,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:55:33,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:55:33,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:55:33,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:55:33,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:55:33,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:55:33,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:55:33,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:55:33,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:55:33,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:55:33,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:55:33,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:55:33,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:55:33,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:55:33,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:55:33,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:55:33,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:55:33,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:55:33,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:55:33,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:55:33,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:55:33,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:55:33,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:55:33,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:55:33,494 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:55:33,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:55:33,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:55:33,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:55:33,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:55:33,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:55:33,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:55:33,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:55:33,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:55:33,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:55:33,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:55:33,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:55:33,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:55:33,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:55:33,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:55:33,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:55:33,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:55:33,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:55:33,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:55:33,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:55:33,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:55:33,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:55:33,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:55:33,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:55:33,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:55:33,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:55:33,911 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:55:33,912 INFO L432 ainManager$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 [2020-12-22 13:55:34,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29aecf77/b853dea6043749ebbfb986b7df19b5d9/FLAGea1898a1a [2020-12-22 13:55:35,254 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:55:35,255 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 [2020-12-22 13:55:35,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29aecf77/b853dea6043749ebbfb986b7df19b5d9/FLAGea1898a1a [2020-12-22 13:55:35,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29aecf77/b853dea6043749ebbfb986b7df19b5d9 [2020-12-22 13:55:35,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:55:35,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:55:35,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:55:35,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:55:35,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:55:35,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:55:35" (1/1) ... [2020-12-22 13:55:35,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc4df6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:35, skipping insertion in model container [2020-12-22 13:55:35,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:55:35" (1/1) ... [2020-12-22 13:55:35,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:55:35,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:55:38,874 WARN L226 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] [2020-12-22 13:55:38,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:55:39,007 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:55:39,669 WARN L226 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] [2020-12-22 13:55:39,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:55:40,940 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:55:40,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40 WrapperNode [2020-12-22 13:55:40,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:55:40,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:55:40,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:55:40,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:55:40,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:41,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:42,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:55:42,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:55:42,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:55:42,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:55:42,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:42,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:42,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:42,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:43,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:44,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:44,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... [2020-12-22 13:55:45,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:55:45,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:55:45,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:55:45,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:55:45,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:55:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2020-12-22 13:55:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2020-12-22 13:55:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:55:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:55:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_release_file [2020-12-22 13:55:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_release_file [2020-12-22 13:55:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:55:45,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:55:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_srq [2020-12-22 13:55:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_srq [2020-12-22 13:55:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_ex_query_device [2020-12-22 13:55:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_ex_query_device [2020-12-22 13:55:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_mmap [2020-12-22 13:55:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_mmap [2020-12-22 13:55:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:55:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:55:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:55:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2020-12-22 13:55:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2020-12-22 13:55:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2020-12-22 13:55:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:55:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:55:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_write [2020-12-22 13:55:45,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_write [2020-12-22 13:55:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:55:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:55:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:55:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:55:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2020-12-22 13:55:45,292 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2020-12-22 13:55:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:55:45,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:55:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:55:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:55:45,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:55:45,296 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_remove_one [2020-12-22 13:55:45,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_remove_one [2020-12-22 13:55:45,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2020-12-22 13:55:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2020-12-22 13:55:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_add_one [2020-12-22 13:55:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_add_one [2020-12-22 13:55:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:55:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:55:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure ib_uverbs_modify_qp [2020-12-22 13:55:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ib_uverbs_modify_qp [2020-12-22 13:55:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:55:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:55:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:56:50,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:56:50,812 INFO L299 CfgBuilder]: Removed 9079 assume(true) statements. [2020-12-22 13:56:50,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:56:50 BoogieIcfgContainer [2020-12-22 13:56:50,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:56:50,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:56:50,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:56:50,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:56:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:55:35" (1/3) ... [2020-12-22 13:56:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7837f16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:56:50, skipping insertion in model container [2020-12-22 13:56:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:55:40" (2/3) ... [2020-12-22 13:56:50,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7837f16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:56:50, skipping insertion in model container [2020-12-22 13:56:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:56:50" (3/3) ... [2020-12-22 13:56:50,831 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--infiniband--core--ib_uverbs.ko-entry_point.cil.out.i [2020-12-22 13:56:50,837 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:56:50,845 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:56:50,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:56:50,916 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:56:50,916 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:56:50,917 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:56:50,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:56:50,917 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:56:50,917 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:56:50,917 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:56:50,917 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:56:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states. [2020-12-22 13:56:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 13:56:51,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:56:51,051 INFO L422 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] [2020-12-22 13:56:51,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:56:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:56:51,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1001547020, now seen corresponding path program 1 times [2020-12-22 13:56:51,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:56:51,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130117057] [2020-12-22 13:56:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:56:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:56:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:56:52,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130117057] [2020-12-22 13:56:52,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:56:52,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:56:52,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726728137] [2020-12-22 13:56:52,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:56:52,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:56:52,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:56:52,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:56:52,043 INFO L87 Difference]: Start difference. First operand 7835 states. Second operand 2 states. [2020-12-22 13:56:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:56:52,574 INFO L93 Difference]: Finished difference Result 15666 states and 21951 transitions. [2020-12-22 13:56:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:56:52,576 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 123 [2020-12-22 13:56:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:56:52,663 INFO L225 Difference]: With dead ends: 15666 [2020-12-22 13:56:52,664 INFO L226 Difference]: Without dead ends: 7822 [2020-12-22 13:56:52,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:56:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2020-12-22 13:56:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 7822. [2020-12-22 13:56:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7822 states. [2020-12-22 13:56:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 10685 transitions. [2020-12-22 13:56:53,349 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 10685 transitions. Word has length 123 [2020-12-22 13:56:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:56:53,350 INFO L481 AbstractCegarLoop]: Abstraction has 7822 states and 10685 transitions. [2020-12-22 13:56:53,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:56:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 10685 transitions. [2020-12-22 13:56:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-22 13:56:53,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:56:53,359 INFO L422 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] [2020-12-22 13:56:53,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:56:53,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:56:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:56:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1568801746, now seen corresponding path program 1 times [2020-12-22 13:56:53,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:56:53,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063327078] [2020-12-22 13:56:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:56:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:56:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:56:54,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063327078] [2020-12-22 13:56:54,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:56:54,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:56:54,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243865902] [2020-12-22 13:56:54,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:56:54,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:56:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:56:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:56:54,287 INFO L87 Difference]: Start difference. First operand 7822 states and 10685 transitions. Second operand 3 states. [2020-12-22 13:56:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:56:55,096 INFO L93 Difference]: Finished difference Result 23252 states and 31992 transitions. [2020-12-22 13:56:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:56:55,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-22 13:56:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:56:55,207 INFO L225 Difference]: With dead ends: 23252 [2020-12-22 13:56:55,207 INFO L226 Difference]: Without dead ends: 15520 [2020-12-22 13:56:55,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:56:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15520 states. [2020-12-22 13:56:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15520 to 15512. [2020-12-22 13:56:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15512 states. [2020-12-22 13:56:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 21229 transitions. [2020-12-22 13:56:56,086 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 21229 transitions. Word has length 123 [2020-12-22 13:56:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:56:56,090 INFO L481 AbstractCegarLoop]: Abstraction has 15512 states and 21229 transitions. [2020-12-22 13:56:56,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:56:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 21229 transitions. [2020-12-22 13:56:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 13:56:56,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:56:56,104 INFO L422 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] [2020-12-22 13:56:56,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:56:56,104 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:56:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:56:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1988831704, now seen corresponding path program 1 times [2020-12-22 13:56:56,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:56:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589520424] [2020-12-22 13:56:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:56:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:56:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:56:56,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589520424] [2020-12-22 13:56:56,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:56:56,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:56:56,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718163659] [2020-12-22 13:56:56,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:56:56,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:56:56,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:56:56,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:56:56,641 INFO L87 Difference]: Start difference. First operand 15512 states and 21229 transitions. Second operand 3 states. [2020-12-22 13:56:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:56:57,940 INFO L93 Difference]: Finished difference Result 46025 states and 63734 transitions. [2020-12-22 13:56:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:56:57,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 13:56:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:56:58,125 INFO L225 Difference]: With dead ends: 46025 [2020-12-22 13:56:58,126 INFO L226 Difference]: Without dead ends: 30617 [2020-12-22 13:56:58,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:56:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2020-12-22 13:56:59,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 30570. [2020-12-22 13:56:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30570 states. [2020-12-22 13:56:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30570 states to 30570 states and 42574 transitions. [2020-12-22 13:56:59,841 INFO L78 Accepts]: Start accepts. Automaton has 30570 states and 42574 transitions. Word has length 134 [2020-12-22 13:56:59,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:56:59,841 INFO L481 AbstractCegarLoop]: Abstraction has 30570 states and 42574 transitions. [2020-12-22 13:56:59,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:56:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30570 states and 42574 transitions. [2020-12-22 13:56:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 13:56:59,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:56:59,845 INFO L422 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] [2020-12-22 13:56:59,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:56:59,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:56:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:56:59,846 INFO L82 PathProgramCache]: Analyzing trace with hash -2091362701, now seen corresponding path program 1 times [2020-12-22 13:56:59,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:56:59,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452585180] [2020-12-22 13:56:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:57:00,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452585180] [2020-12-22 13:57:00,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:00,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:57:00,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20180263] [2020-12-22 13:57:00,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:57:00,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:00,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:57:00,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:00,270 INFO L87 Difference]: Start difference. First operand 30570 states and 42574 transitions. Second operand 3 states. [2020-12-22 13:57:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:01,982 INFO L93 Difference]: Finished difference Result 60672 states and 84509 transitions. [2020-12-22 13:57:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:57:01,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-22 13:57:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:02,119 INFO L225 Difference]: With dead ends: 60672 [2020-12-22 13:57:02,120 INFO L226 Difference]: Without dead ends: 30206 [2020-12-22 13:57:02,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30206 states. [2020-12-22 13:57:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30206 to 30206. [2020-12-22 13:57:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30206 states. [2020-12-22 13:57:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30206 states to 30206 states and 42046 transitions. [2020-12-22 13:57:03,792 INFO L78 Accepts]: Start accepts. Automaton has 30206 states and 42046 transitions. Word has length 136 [2020-12-22 13:57:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:03,794 INFO L481 AbstractCegarLoop]: Abstraction has 30206 states and 42046 transitions. [2020-12-22 13:57:03,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:57:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 30206 states and 42046 transitions. [2020-12-22 13:57:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 13:57:03,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:03,797 INFO L422 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] [2020-12-22 13:57:03,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:57:03,798 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -995424755, now seen corresponding path program 1 times [2020-12-22 13:57:03,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:03,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581733086] [2020-12-22 13:57:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:57:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581733086] [2020-12-22 13:57:04,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:04,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:57:04,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427079598] [2020-12-22 13:57:04,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:57:04,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:57:04,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:04,507 INFO L87 Difference]: Start difference. First operand 30206 states and 42046 transitions. Second operand 3 states. [2020-12-22 13:57:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:06,112 INFO L93 Difference]: Finished difference Result 58646 states and 81753 transitions. [2020-12-22 13:57:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:57:06,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 13:57:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:06,254 INFO L225 Difference]: With dead ends: 58646 [2020-12-22 13:57:06,254 INFO L226 Difference]: Without dead ends: 28544 [2020-12-22 13:57:06,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28544 states. [2020-12-22 13:57:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28544 to 28544. [2020-12-22 13:57:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28544 states. [2020-12-22 13:57:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28544 states to 28544 states and 39818 transitions. [2020-12-22 13:57:08,038 INFO L78 Accepts]: Start accepts. Automaton has 28544 states and 39818 transitions. Word has length 142 [2020-12-22 13:57:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:08,039 INFO L481 AbstractCegarLoop]: Abstraction has 28544 states and 39818 transitions. [2020-12-22 13:57:08,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:57:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28544 states and 39818 transitions. [2020-12-22 13:57:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:57:08,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:08,047 INFO L422 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] [2020-12-22 13:57:08,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:57:08,049 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:08,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:08,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1609332516, now seen corresponding path program 1 times [2020-12-22 13:57:08,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:08,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101757404] [2020-12-22 13:57:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:57:08,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101757404] [2020-12-22 13:57:08,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:08,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:57:08,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703611258] [2020-12-22 13:57:08,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:57:08,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:08,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:57:08,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:08,720 INFO L87 Difference]: Start difference. First operand 28544 states and 39818 transitions. Second operand 3 states. [2020-12-22 13:57:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:11,006 INFO L93 Difference]: Finished difference Result 85368 states and 119136 transitions. [2020-12-22 13:57:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:57:11,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 13:57:11,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:11,357 INFO L225 Difference]: With dead ends: 85368 [2020-12-22 13:57:11,357 INFO L226 Difference]: Without dead ends: 56928 [2020-12-22 13:57:11,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56928 states. [2020-12-22 13:57:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56928 to 56906. [2020-12-22 13:57:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56906 states. [2020-12-22 13:57:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56906 states to 56906 states and 79409 transitions. [2020-12-22 13:57:14,481 INFO L78 Accepts]: Start accepts. Automaton has 56906 states and 79409 transitions. Word has length 148 [2020-12-22 13:57:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:14,482 INFO L481 AbstractCegarLoop]: Abstraction has 56906 states and 79409 transitions. [2020-12-22 13:57:14,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:57:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 56906 states and 79409 transitions. [2020-12-22 13:57:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-12-22 13:57:14,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:14,485 INFO L422 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] [2020-12-22 13:57:14,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:57:14,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:14,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1173068197, now seen corresponding path program 1 times [2020-12-22 13:57:14,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:14,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680533797] [2020-12-22 13:57:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:57:15,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680533797] [2020-12-22 13:57:15,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:15,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:57:15,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431811616] [2020-12-22 13:57:15,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:57:15,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:57:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:15,149 INFO L87 Difference]: Start difference. First operand 56906 states and 79409 transitions. Second operand 3 states. [2020-12-22 13:57:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:19,869 INFO L93 Difference]: Finished difference Result 142116 states and 198358 transitions. [2020-12-22 13:57:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:57:19,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-12-22 13:57:19,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:20,542 INFO L225 Difference]: With dead ends: 142116 [2020-12-22 13:57:20,542 INFO L226 Difference]: Without dead ends: 85314 [2020-12-22 13:57:20,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:57:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85314 states. [2020-12-22 13:57:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85314 to 85292. [2020-12-22 13:57:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85292 states. [2020-12-22 13:57:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85292 states to 85292 states and 119032 transitions. [2020-12-22 13:57:24,570 INFO L78 Accepts]: Start accepts. Automaton has 85292 states and 119032 transitions. Word has length 170 [2020-12-22 13:57:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:24,571 INFO L481 AbstractCegarLoop]: Abstraction has 85292 states and 119032 transitions. [2020-12-22 13:57:24,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:57:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 85292 states and 119032 transitions. [2020-12-22 13:57:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-22 13:57:24,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:24,574 INFO L422 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] [2020-12-22 13:57:24,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:57:24,574 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1143899565, now seen corresponding path program 1 times [2020-12-22 13:57:24,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:24,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049367140] [2020-12-22 13:57:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:57:26,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049367140] [2020-12-22 13:57:26,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:26,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:57:26,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246711285] [2020-12-22 13:57:26,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:57:26,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:26,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:57:26,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:57:26,064 INFO L87 Difference]: Start difference. First operand 85292 states and 119032 transitions. Second operand 7 states. [2020-12-22 13:57:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:57:32,759 INFO L93 Difference]: Finished difference Result 170294 states and 242505 transitions. [2020-12-22 13:57:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:57:32,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-12-22 13:57:32,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:57:33,242 INFO L225 Difference]: With dead ends: 170294 [2020-12-22 13:57:33,242 INFO L226 Difference]: Without dead ends: 85106 [2020-12-22 13:57:33,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 13:57:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85106 states. [2020-12-22 13:57:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85106 to 85052. [2020-12-22 13:57:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85052 states. [2020-12-22 13:57:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85052 states to 85052 states and 119978 transitions. [2020-12-22 13:57:37,353 INFO L78 Accepts]: Start accepts. Automaton has 85052 states and 119978 transitions. Word has length 179 [2020-12-22 13:57:37,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:57:37,353 INFO L481 AbstractCegarLoop]: Abstraction has 85052 states and 119978 transitions. [2020-12-22 13:57:37,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:57:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 85052 states and 119978 transitions. [2020-12-22 13:57:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 13:57:37,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:57:37,360 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:57:37,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:57:37,361 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:57:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:57:37,361 INFO L82 PathProgramCache]: Analyzing trace with hash 59208050, now seen corresponding path program 1 times [2020-12-22 13:57:37,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:57:37,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952298376] [2020-12-22 13:57:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:57:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:37,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-12-22 13:57:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:57:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:57:38,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952298376] [2020-12-22 13:57:38,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:57:38,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:57:38,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276911498] [2020-12-22 13:57:38,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:57:38,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:57:38,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:57:38,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:57:38,059 INFO L87 Difference]: Start difference. First operand 85052 states and 119978 transitions. Second operand 4 states. [2020-12-22 13:58:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:58:48,533 INFO L93 Difference]: Finished difference Result 212299 states and 302590 transitions. [2020-12-22 13:58:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:58:48,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-12-22 13:58:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:58:49,006 INFO L225 Difference]: With dead ends: 212299 [2020-12-22 13:58:49,006 INFO L226 Difference]: Without dead ends: 127351 [2020-12-22 13:58:49,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:58:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127351 states. [2020-12-22 13:58:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127351 to 126990. [2020-12-22 13:58:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126990 states. [2020-12-22 13:58:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126990 states to 126990 states and 181471 transitions. [2020-12-22 13:58:55,002 INFO L78 Accepts]: Start accepts. Automaton has 126990 states and 181471 transitions. Word has length 209 [2020-12-22 13:58:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:58:55,003 INFO L481 AbstractCegarLoop]: Abstraction has 126990 states and 181471 transitions. [2020-12-22 13:58:55,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:58:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 126990 states and 181471 transitions. [2020-12-22 13:58:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-12-22 13:58:55,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:58:55,010 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:58:55,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:58:55,010 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ib_uverbs_release_fileErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:58:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:58:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash 594450779, now seen corresponding path program 1 times [2020-12-22 13:58:55,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:58:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921345144] [2020-12-22 13:58:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:58:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-12-22 13:58:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:58:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 13:58:55,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921345144] [2020-12-22 13:58:55,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:58:55,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:58:55,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661740338] [2020-12-22 13:58:55,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:58:55,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:58:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:58:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:58:55,858 INFO L87 Difference]: Start difference. First operand 126990 states and 181471 transitions. Second operand 4 states.