./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.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 f04f938fee3705b6ab112999ad746b29d3f93a10 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 f04f938fee3705b6ab112999ad746b29d3f93a10 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 16:22:39,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 16:22:39,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 16:22:39,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 16:22:39,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 16:22:39,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 16:22:39,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 16:22:39,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 16:22:39,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 16:22:39,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 16:22:39,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 16:22:39,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 16:22:39,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 16:22:39,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 16:22:39,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 16:22:39,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 16:22:39,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 16:22:39,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 16:22:39,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 16:22:39,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 16:22:39,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 16:22:39,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 16:22:39,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 16:22:39,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 16:22:39,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 16:22:39,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 16:22:39,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 16:22:39,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 16:22:39,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 16:22:39,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 16:22:39,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 16:22:39,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 16:22:39,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 16:22:39,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 16:22:39,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 16:22:39,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 16:22:39,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 16:22:39,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 16:22:39,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 16:22:39,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 16:22:39,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 16:22:39,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-08-26 16:22:39,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 16:22:39,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 16:22:39,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 16:22:39,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 16:22:39,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 16:22:39,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 16:22:39,439 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 16:22:39,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 16:22:39,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 16:22:39,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 16:22:39,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 16:22:39,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 16:22:39,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04f938fee3705b6ab112999ad746b29d3f93a10 [2021-08-26 16:22:39,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 16:22:39,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 16:22:39,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 16:22:39,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 16:22:39,712 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 16:22:39,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:39,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539fdbb2b/f2e177f247704058a296ccff6f50d242/FLAG594b3afc5 [2021-08-26 16:22:40,275 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 16:22:40,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:40,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539fdbb2b/f2e177f247704058a296ccff6f50d242/FLAG594b3afc5 [2021-08-26 16:22:40,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/539fdbb2b/f2e177f247704058a296ccff6f50d242 [2021-08-26 16:22:40,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 16:22:40,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 16:22:40,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 16:22:40,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 16:22:40,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 16:22:40,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:22:40" (1/1) ... [2021-08-26 16:22:40,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4930a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:40, skipping insertion in model container [2021-08-26 16:22:40,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:22:40" (1/1) ... [2021-08-26 16:22:40,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 16:22:40,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 16:22:41,118 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-08-26 16:22:41,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 16:22:41,144 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 16:22:41,306 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-08-26 16:22:41,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 16:22:41,356 INFO L208 MainTranslator]: Completed translation [2021-08-26 16:22:41,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41 WrapperNode [2021-08-26 16:22:41,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 16:22:41,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 16:22:41,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 16:22:41,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 16:22:41,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 16:22:41,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 16:22:41,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 16:22:41,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 16:22:41,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 16:22:41,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 16:22:41,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 16:22:41,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 16:22:41,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (1/1) ... [2021-08-26 16:22:41,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 16:22:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 16:22:41,507 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) [2021-08-26 16:22:41,514 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 [2021-08-26 16:22:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 16:22:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 16:22:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 16:22:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 16:22:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 16:22:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 16:22:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-26 16:22:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 16:22:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 16:22:41,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 16:22:42,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 16:22:42,251 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-08-26 16:22:42,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:42 BoogieIcfgContainer [2021-08-26 16:22:42,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 16:22:42,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 16:22:42,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 16:22:42,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 16:22:42,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:22:40" (1/3) ... [2021-08-26 16:22:42,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9efa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:22:42, skipping insertion in model container [2021-08-26 16:22:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:41" (2/3) ... [2021-08-26 16:22:42,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9efa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:22:42, skipping insertion in model container [2021-08-26 16:22:42,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:42" (3/3) ... [2021-08-26 16:22:42,257 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:42,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 16:22:42,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 16:22:42,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 16:22:42,324 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 16:22:42,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 16:22:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 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) [2021-08-26 16:22:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 16:22:42,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:42,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 16:22:42,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:42,359 INFO L82 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-08-26 16:22:42,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 16:22:42,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057167173] [2021-08-26 16:22:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:42,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 16:22:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 16:22:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 16:22:42,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 16:22:42,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057167173] [2021-08-26 16:22:42,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057167173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 16:22:42,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 16:22:42,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 16:22:42,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389478553] [2021-08-26 16:22:42,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 16:22:42,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 16:22:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 16:22:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 16:22:42,576 INFO L87 Difference]: Start difference. First operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 16:22:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 16:22:42,649 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-08-26 16:22:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 16:22:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-08-26 16:22:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 16:22:42,659 INFO L225 Difference]: With dead ends: 235 [2021-08-26 16:22:42,659 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 16:22:42,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 16:22:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 16:22:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-08-26 16:22:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.273972602739726) internal successors, (186), 147 states have internal predecessors, (186), 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) [2021-08-26 16:22:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-08-26 16:22:42,707 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-08-26 16:22:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 16:22:42,707 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-08-26 16:22:42,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 16:22:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-08-26 16:22:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 16:22:42,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:42,709 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 16:22:42,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 16:22:42,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:42,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:42,712 INFO L82 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-08-26 16:22:42,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 16:22:42,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791597474] [2021-08-26 16:22:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:42,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 16:22:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 16:22:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 16:22:42,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 16:22:42,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791597474] [2021-08-26 16:22:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791597474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 16:22:42,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 16:22:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 16:22:42,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578755594] [2021-08-26 16:22:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 16:22:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 16:22:42,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 16:22:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 16:22:42,827 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-08-26 16:22:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 16:22:42,850 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-08-26 16:22:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 16:22:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 40 [2021-08-26 16:22:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 16:22:42,851 INFO L225 Difference]: With dead ends: 290 [2021-08-26 16:22:42,851 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 16:22:42,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 16:22:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 16:22:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-08-26 16:22:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 147 states have internal predecessors, (185), 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) [2021-08-26 16:22:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-08-26 16:22:42,858 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-08-26 16:22:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 16:22:42,859 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-08-26 16:22:42,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-08-26 16:22:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-08-26 16:22:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 16:22:42,860 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:42,860 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 16:22:42,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 16:22:42,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:42,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-08-26 16:22:42,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 16:22:42,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387373656] [2021-08-26 16:22:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:42,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 16:22:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 16:22:42,998 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 16:22:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 16:22:43,080 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 16:22:43,080 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 16:22:43,081 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 16:22:43,082 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 16:22:43,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 16:22:43,086 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 16:22:43,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:22:43 BoogieIcfgContainer [2021-08-26 16:22:43,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 16:22:43,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 16:22:43,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 16:22:43,154 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 16:22:43,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:42" (3/4) ... [2021-08-26 16:22:43,156 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 16:22:43,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 16:22:43,157 INFO L168 Benchmark]: Toolchain (without parser) took 2612.06 ms. Allocated memory was 52.4 MB in the beginning and 140.5 MB in the end (delta: 88.1 MB). Free memory was 34.8 MB in the beginning and 91.1 MB in the end (delta: -56.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,157 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 16:22:43,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.68 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 34.7 MB in the beginning and 39.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.48 ms. Allocated memory is still 83.9 MB. Free memory was 39.8 MB in the beginning and 34.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,159 INFO L168 Benchmark]: Boogie Preprocessor took 45.78 ms. Allocated memory is still 83.9 MB. Free memory was 34.0 MB in the beginning and 46.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,159 INFO L168 Benchmark]: RCFGBuilder took 768.76 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 46.7 MB in the beginning and 59.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,159 INFO L168 Benchmark]: TraceAbstraction took 899.59 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 59.1 MB in the beginning and 92.0 MB in the end (delta: -32.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:43,160 INFO L168 Benchmark]: Witness Printer took 2.53 ms. Allocated memory is still 140.5 MB. Free memory was 92.0 MB in the beginning and 91.1 MB in the end (delta: 910.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 16:22:43,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 811.68 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 34.7 MB in the beginning and 39.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.48 ms. Allocated memory is still 83.9 MB. Free memory was 39.8 MB in the beginning and 34.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.78 ms. Allocated memory is still 83.9 MB. Free memory was 34.0 MB in the beginning and 46.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 768.76 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 46.7 MB in the beginning and 59.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 899.59 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 59.1 MB in the beginning and 92.0 MB in the end (delta: -32.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 2.53 ms. Allocated memory is still 140.5 MB. Free memory was 92.0 MB in the beginning and 91.1 MB in the end (delta: 910.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4535] return __VERIFIER_nondet_int(); [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4351] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L4437] return __VERIFIER_nondet_int(); [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={4294967299:4294967302}, features={14:0}, id_table={35:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={21:0}, virtio_blk={30:0}] - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 780.1ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 7.6ms, AutomataDifference: 120.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 222 SDtfs, 98 SDslu, 288 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.0ms SsaConstructionTime, 222.1ms SatisfiabilityAnalysisTime, 113.8ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 16:22:43,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 16:22:44,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 16:22:44,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 16:22:44,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 16:22:44,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 16:22:44,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 16:22:44,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 16:22:44,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 16:22:44,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 16:22:44,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 16:22:44,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 16:22:44,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 16:22:44,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 16:22:44,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 16:22:44,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 16:22:44,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 16:22:44,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 16:22:44,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 16:22:44,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 16:22:44,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 16:22:44,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 16:22:44,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 16:22:44,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 16:22:44,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 16:22:44,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 16:22:44,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 16:22:44,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 16:22:44,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 16:22:44,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 16:22:44,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 16:22:44,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 16:22:44,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 16:22:44,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 16:22:44,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 16:22:44,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 16:22:44,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 16:22:44,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 16:22:44,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 16:22:44,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 16:22:44,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 16:22:44,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 16:22:44,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-08-26 16:22:44,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 16:22:44,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 16:22:44,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 16:22:44,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 16:22:44,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 16:22:44,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 16:22:44,783 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 16:22:44,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 16:22:44,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 16:22:44,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 16:22:44,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 16:22:44,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 16:22:44,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 16:22:44,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 16:22:44,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 16:22:44,786 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04f938fee3705b6ab112999ad746b29d3f93a10 [2021-08-26 16:22:45,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 16:22:45,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 16:22:45,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 16:22:45,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 16:22:45,074 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 16:22:45,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:45,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f6ada36/a0db439456eb4acaae4ecd2ca1aebe82/FLAG3f760a9aa [2021-08-26 16:22:45,684 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 16:22:45,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:45,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f6ada36/a0db439456eb4acaae4ecd2ca1aebe82/FLAG3f760a9aa [2021-08-26 16:22:46,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f6ada36/a0db439456eb4acaae4ecd2ca1aebe82 [2021-08-26 16:22:46,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 16:22:46,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 16:22:46,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 16:22:46,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 16:22:46,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 16:22:46,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:22:46" (1/1) ... [2021-08-26 16:22:46,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18603b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:46, skipping insertion in model container [2021-08-26 16:22:46,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:22:46" (1/1) ... [2021-08-26 16:22:46,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 16:22:46,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 16:22:46,927 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-08-26 16:22:46,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 16:22:46,961 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 16:22:47,145 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-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-08-26 16:22:47,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 16:22:47,191 INFO L208 MainTranslator]: Completed translation [2021-08-26 16:22:47,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47 WrapperNode [2021-08-26 16:22:47,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 16:22:47,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 16:22:47,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 16:22:47,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 16:22:47,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 16:22:47,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 16:22:47,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 16:22:47,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 16:22:47,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 16:22:47,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 16:22:47,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 16:22:47,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 16:22:47,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (1/1) ... [2021-08-26 16:22:47,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 16:22:47,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 16:22:47,390 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) [2021-08-26 16:22:47,429 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 [2021-08-26 16:22:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-26 16:22:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-08-26 16:22:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 16:22:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 16:22:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-26 16:22:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 16:22:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-08-26 16:22:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 16:22:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 16:22:48,390 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 16:22:48,391 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-08-26 16:22:48,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:48 BoogieIcfgContainer [2021-08-26 16:22:48,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 16:22:48,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 16:22:48,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 16:22:48,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 16:22:48,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:22:46" (1/3) ... [2021-08-26 16:22:48,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b4343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:22:48, skipping insertion in model container [2021-08-26 16:22:48,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:22:47" (2/3) ... [2021-08-26 16:22:48,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152b4343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:22:48, skipping insertion in model container [2021-08-26 16:22:48,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:48" (3/3) ... [2021-08-26 16:22:48,399 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-08-26 16:22:48,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 16:22:48,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 16:22:48,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 16:22:48,440 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 16:22:48,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 16:22:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 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) [2021-08-26 16:22:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 16:22:48,456 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:48,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 16:22:48,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-08-26 16:22:48,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 16:22:48,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74691505] [2021-08-26 16:22:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:48,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 16:22:48,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 16:22:48,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 16:22:48,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 16:22:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 16:22:48,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-26 16:22:48,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 16:22:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 16:22:48,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 16:22:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 16:22:48,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 16:22:48,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74691505] [2021-08-26 16:22:48,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74691505] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 16:22:48,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 16:22:48,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 16:22:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034482960] [2021-08-26 16:22:48,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 16:22:48,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 16:22:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 16:22:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 16:22:48,863 INFO L87 Difference]: Start difference. First operand has 88 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 87 states have internal predecessors, (114), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 16:22:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 16:22:48,909 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-08-26 16:22:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 16:22:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-08-26 16:22:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 16:22:48,916 INFO L225 Difference]: With dead ends: 235 [2021-08-26 16:22:48,916 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 16:22:48,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 16:22:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 16:22:48,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-08-26 16:22:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.273972602739726) internal successors, (186), 147 states have internal predecessors, (186), 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) [2021-08-26 16:22:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-08-26 16:22:48,952 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-08-26 16:22:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 16:22:48,952 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-08-26 16:22:48,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-26 16:22:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-08-26 16:22:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 16:22:48,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:48,957 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 16:22:48,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 16:22:49,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 16:22:49,164 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:49,166 INFO L82 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-08-26 16:22:49,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 16:22:49,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780407044] [2021-08-26 16:22:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:49,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 16:22:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 16:22:49,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 16:22:49,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 16:22:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 16:22:49,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 16:22:49,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 16:22:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 16:22:49,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 16:22:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 16:22:49,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 16:22:49,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780407044] [2021-08-26 16:22:49,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780407044] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 16:22:49,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 16:22:49,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-26 16:22:49,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716899603] [2021-08-26 16:22:49,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 16:22:49,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 16:22:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 16:22:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 16:22:49,705 INFO L87 Difference]: Start difference. First operand 148 states and 186 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-08-26 16:22:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 16:22:49,751 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-08-26 16:22:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 16:22:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 40 [2021-08-26 16:22:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 16:22:49,757 INFO L225 Difference]: With dead ends: 290 [2021-08-26 16:22:49,757 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 16:22:49,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 16:22:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 16:22:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-08-26 16:22:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 147 states have internal predecessors, (185), 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) [2021-08-26 16:22:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-08-26 16:22:49,775 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-08-26 16:22:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 16:22:49,775 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-08-26 16:22:49,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-08-26 16:22:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-08-26 16:22:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 16:22:49,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 16:22:49,776 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-26 16:22:49,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 16:22:49,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 16:22:49,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 16:22:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 16:22:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-08-26 16:22:49,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 16:22:49,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826646485] [2021-08-26 16:22:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 16:22:49,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 16:22:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 16:22:49,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 16:22:49,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 16:22:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 16:22:50,804 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 16:22:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 16:22:51,680 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-26 16:22:51,680 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 16:22:51,681 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 16:22:51,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 16:22:51,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 16:22:51,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 16:22:51,905 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 16:22:52,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:22:52 BoogieIcfgContainer [2021-08-26 16:22:52,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 16:22:52,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 16:22:52,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 16:22:52,010 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 16:22:52,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:22:48" (3/4) ... [2021-08-26 16:22:52,019 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 16:22:52,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 16:22:52,021 INFO L168 Benchmark]: Toolchain (without parser) took 5899.97 ms. Allocated memory was 65.0 MB in the beginning and 148.9 MB in the end (delta: 83.9 MB). Free memory was 39.7 MB in the beginning and 82.4 MB in the end (delta: -42.7 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,021 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 16:22:52,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1070.44 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 39.5 MB in the beginning and 41.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.19 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 41.1 MB in the beginning and 82.0 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,024 INFO L168 Benchmark]: Boogie Preprocessor took 64.00 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 77.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,024 INFO L168 Benchmark]: RCFGBuilder took 1032.43 ms. Allocated memory is still 117.4 MB. Free memory was 77.2 MB in the beginning and 56.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,025 INFO L168 Benchmark]: TraceAbstraction took 3615.52 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 55.6 MB in the beginning and 83.5 MB in the end (delta: -27.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,028 INFO L168 Benchmark]: Witness Printer took 9.45 ms. Allocated memory is still 148.9 MB. Free memory was 83.5 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 16:22:52,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1070.44 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 39.5 MB in the beginning and 41.1 MB in the end (delta: -1.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.19 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 41.1 MB in the beginning and 82.0 MB in the end (delta: -40.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.00 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 77.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1032.43 ms. Allocated memory is still 117.4 MB. Free memory was 77.2 MB in the beginning and 56.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3615.52 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 55.6 MB in the beginning and 83.5 MB in the end (delta: -27.9 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. * Witness Printer took 9.45 ms. Allocated memory is still 148.9 MB. Free memory was 83.5 MB in the beginning and 82.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 4185. Possible FailurePath: [L3648] static int major ; [L3649] static int index ; [L3974-L3975] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4173-L4174] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4175-L4178] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4179-L4180] static struct virtio_driver virtio_blk = {{"virtio_blk", 0, & __this_module, 0, (_Bool)0, 0, 0, 0, 0, 0, 0, 0, 0}, (struct virtio_device_id const *)(& id_table), (unsigned int const *)(& features), 9U, & virtblk_probe, & virtblk_remove, 0}; [L4202] struct virtio_device_id const __mod_virtio_device_table ; [L4207] int LDV_IN_INTERRUPT ; [L4348] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4210] struct block_device *var_group1 ; [L4211] fmode_t var_virtblk_ioctl_5_p1 ; [L4212] unsigned int var_virtblk_ioctl_5_p2 ; [L4213] unsigned long var_virtblk_ioctl_5_p3 ; [L4214] struct hd_geometry *var_group2 ; [L4215] int tmp ; [L4216] int tmp___0 ; [L4217] int tmp___1 ; [L4219] LDV_IN_INTERRUPT = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4183] int tmp ; [L4185] CALL, EXPR register_blkdev(0U, "virtblk") [L4531] return __VERIFIER_nondet_int(); [L4185] major = register_blkdev(0U, "virtblk") [L4186] COND FALSE !(major < 0) [L4535] return __VERIFIER_nondet_int(); [L4190] tmp = register_virtio_driver(& virtio_blk) [L4191] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4229] tmp___0 = __VERIFIER_nondet_int() [L4231] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3912] struct gendisk *disk ; [L3913] struct virtio_blk *vblk ; [L3914] void *usr_data ; [L3915] char id_str[20U] ; [L3916] int err ; [L3917] int tmp ; [L3918] bool tmp___0 ; [L3919] int tmp___1 ; [L3920] int tmp___2 ; [L3922] EXPR bdev->bd_disk [L3922] disk = bdev->bd_disk [L3923] EXPR disk->private_data [L3923] vblk = (struct virtio_blk *)disk->private_data [L3924] COND TRUE cmd == 1447184708U [L3925] usr_data = (void *)data [L3879] struct virtio_blk *vblk ; [L3880] struct request *req ; [L3881] struct bio *bio ; [L3882] long tmp ; [L3883] long tmp___0 ; [L3884] long tmp___1 ; [L3885] long tmp___2 ; [L3886] int tmp___3 ; [L3888] EXPR disk->private_data [L3888] vblk = (struct virtio_blk *)disk->private_data [L3889] EXPR vblk->disk [L3889] EXPR (vblk->disk)->queue [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4427] return ldv_malloc(sizeof(struct bio)); [L3889] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3890] tmp___0 = IS_ERR((void const *)bio) [L3891] COND FALSE !(tmp___0 != 0L) [L3896] EXPR vblk->disk [L3896] EXPR (vblk->disk)->queue [L4283] ldv_func_ret_type___3 ldv_func_res ; [L4284] struct request *tmp ; [L3456] COND FALSE !(__VERIFIER_nondet_int()) [L3461] return ((void *)0); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4443] return ldv_malloc(sizeof(struct request)); [L4286] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4287] ldv_func_res = tmp [L4351] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4357] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4358] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3896] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4274] long tmp ; [L4307] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4276] tmp = ldv_is_err(ptr) [L4277] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3897] tmp___2 = IS_ERR((void const *)req) [L3898] COND FALSE !(tmp___2 != 0L) [L3904] req->cmd_type = 7 [L3905] EXPR vblk->disk [L3905] EXPR (vblk->disk)->queue [L3905] EXPR vblk->disk [L4437] return __VERIFIER_nondet_int(); [L3905] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3906] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3926] err = virtblk_get_id(disk, (char *)(& id_str)) [L3927] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4244] tmp___1 = __VERIFIER_nondet_int() [L4245] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-1073741813:0}, id_table={-1610612728:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={536870913:0}, virtio_blk={536870922:0}] - UnprovableResult [Line: 4295]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3469.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 11.7ms, AutomataDifference: 121.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 222 SDtfs, 98 SDslu, 389 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 98.1ms SsaConstructionTime, 838.9ms SatisfiabilityAnalysisTime, 373.0ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 4 NumberOfNonLiveVariables, 527 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-26 16:22:52,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...