./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 5b36d44f 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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 11:19:24,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 11:19:24,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 11:19:24,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 11:19:24,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 11:19:24,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 11:19:24,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 11:19:24,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 11:19:24,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 11:19:24,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 11:19:24,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 11:19:24,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 11:19:24,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 11:19:24,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 11:19:24,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 11:19:24,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 11:19:24,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 11:19:24,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 11:19:24,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 11:19:24,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 11:19:24,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 11:19:24,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 11:19:24,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 11:19:24,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 11:19:24,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 11:19:24,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 11:19:24,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 11:19:24,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 11:19:24,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 11:19:24,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 11:19:24,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 11:19:24,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 11:19:24,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 11:19:24,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 11:19:24,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 11:19:24,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 11:19:24,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 11:19:24,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 11:19:24,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 11:19:24,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 11:19:24,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 11:19:24,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 11:19:24,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 11:19:24,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 11:19:24,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 11:19:24,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 11:19:24,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 11:19:24,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 11:19:24,857 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 11:19:24,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 11:19:24,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 11:19:24,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 11:19:24,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 11:19:24,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 11:19:24,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 11:19:24,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 11:19:24,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 11:19:24,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 11:19:24,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 11:19:24,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 11:19:24,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 11:19:24,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 11:19:24,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 11:19:24,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 11:19:24,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 11:19:24,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 11:19:24,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 11:19:24,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 11:19:24,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 11:19:24,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 11:19:24,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 11:19:24,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-07 11:19:25,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 11:19:25,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 11:19:25,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 11:19:25,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 11:19:25,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 11:19:25,128 INFO L432 ainManager$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 [2021-11-07 11:19:25,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5780f1859/d70e2d52202f422eae6ff441539aef7a/FLAG19698f437 [2021-11-07 11:19:25,768 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 11:19:25,769 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 [2021-11-07 11:19:25,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5780f1859/d70e2d52202f422eae6ff441539aef7a/FLAG19698f437 [2021-11-07 11:19:26,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5780f1859/d70e2d52202f422eae6ff441539aef7a [2021-11-07 11:19:26,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 11:19:26,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 11:19:26,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 11:19:26,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 11:19:26,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 11:19:26,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:26" (1/1) ... [2021-11-07 11:19:26,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c79cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:26, skipping insertion in model container [2021-11-07 11:19:26,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:26" (1/1) ... [2021-11-07 11:19:26,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 11:19:26,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 11:19:27,009 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] [2021-11-07 11:19:27,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 11:19:27,043 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 11:19:27,231 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] [2021-11-07 11:19:27,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 11:19:27,275 INFO L208 MainTranslator]: Completed translation [2021-11-07 11:19:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27 WrapperNode [2021-11-07 11:19:27,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 11:19:27,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 11:19:27,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 11:19:27,279 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 11:19:27,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 11:19:27,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 11:19:27,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 11:19:27,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 11:19:27,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 11:19:27,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 11:19:27,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 11:19:27,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 11:19:27,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (1/1) ... [2021-11-07 11:19:27,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 11:19:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 11:19:27,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 11:19:27,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 11:19:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 11:19:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 11:19:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 11:19:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 11:19:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 11:19:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 11:19:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 11:19:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 11:19:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 11:19:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 11:19:28,224 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 11:19:28,224 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-07 11:19:28,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:28 BoogieIcfgContainer [2021-11-07 11:19:28,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 11:19:28,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 11:19:28,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 11:19:28,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 11:19:28,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:19:26" (1/3) ... [2021-11-07 11:19:28,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab45fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:28, skipping insertion in model container [2021-11-07 11:19:28,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:27" (2/3) ... [2021-11-07 11:19:28,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab45fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:28, skipping insertion in model container [2021-11-07 11:19:28,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:28" (3/3) ... [2021-11-07 11:19:28,244 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 11:19:28,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 11:19:28,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 11:19:28,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 11:19:28,324 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 11:19:28,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 11:19:28,350 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) [2021-11-07 11:19:28,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 11:19:28,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:28,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 11:19:28,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:28,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-11-07 11:19:28,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 11:19:28,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890625505] [2021-11-07 11:19:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:28,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 11:19:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 11:19:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 11:19:28,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 11:19:28,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890625505] [2021-11-07 11:19:28,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890625505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 11:19:28,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 11:19:28,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 11:19:28,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033962607] [2021-11-07 11:19:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 11:19:28,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 11:19:28,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 11:19:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 11:19:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 11:19:28,730 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) [2021-11-07 11:19:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 11:19:28,786 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-11-07 11:19:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 11:19:28,788 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 [2021-11-07 11:19:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 11:19:28,797 INFO L225 Difference]: With dead ends: 235 [2021-11-07 11:19:28,798 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 11:19:28,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 11:19:28,802 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.47ms IncrementalHoareTripleChecker+Time [2021-11-07 11:19:28,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 203 Invalid, 9 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.47ms Time] [2021-11-07 11:19:28,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 11:19:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 11:19:28,842 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) [2021-11-07 11:19:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-11-07 11:19:28,846 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-11-07 11:19:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 11:19:28,846 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-11-07 11:19:28,846 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) [2021-11-07 11:19:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-11-07 11:19:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 11:19:28,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:28,849 INFO L514 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] [2021-11-07 11:19:28,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 11:19:28,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-11-07 11:19:28,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 11:19:28,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632573412] [2021-11-07 11:19:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:28,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 11:19:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 11:19:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 11:19:28,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 11:19:28,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632573412] [2021-11-07 11:19:28,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632573412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 11:19:28,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 11:19:28,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 11:19:28,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598140255] [2021-11-07 11:19:28,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 11:19:28,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 11:19:28,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 11:19:28,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 11:19:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 11:19:28,993 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) [2021-11-07 11:19:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 11:19:29,042 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-11-07 11:19:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 11:19:29,043 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 [2021-11-07 11:19:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 11:19:29,044 INFO L225 Difference]: With dead ends: 290 [2021-11-07 11:19:29,044 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 11:19:29,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 11:19:29,046 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.80ms IncrementalHoareTripleChecker+Time [2021-11-07 11:19:29,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 2.21ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 11.80ms Time] [2021-11-07 11:19:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 11:19:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 11:19:29,065 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) [2021-11-07 11:19:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-11-07 11:19:29,067 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-11-07 11:19:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 11:19:29,067 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-11-07 11:19:29,068 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) [2021-11-07 11:19:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-11-07 11:19:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 11:19:29,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:29,069 INFO L514 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] [2021-11-07 11:19:29,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 11:19:29,070 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-11-07 11:19:29,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 11:19:29,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259940539] [2021-11-07 11:19:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:29,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 11:19:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 11:19:29,155 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 11:19:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 11:19:29,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 11:19:29,335 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-07 11:19:29,336 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-07 11:19:29,338 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-07 11:19:29,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 11:19:29,348 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 11:19:29,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 11:19:29,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:19:29 BoogieIcfgContainer [2021-11-07 11:19:29,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 11:19:29,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 11:19:29,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 11:19:29,472 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 11:19:29,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:28" (3/4) ... [2021-11-07 11:19:29,474 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 11:19:29,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 11:19:29,476 INFO L158 Benchmark]: Toolchain (without parser) took 3272.52ms. Allocated memory was 92.3MB in the beginning and 144.7MB in the end (delta: 52.4MB). Free memory was 56.7MB in the beginning and 92.1MB in the end (delta: -35.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,476 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 11:19:29,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1071.46ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 56.5MB in the beginning and 64.3MB in the end (delta: -7.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.29ms. Allocated memory is still 115.3MB. Free memory was 64.3MB in the beginning and 58.4MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,484 INFO L158 Benchmark]: Boogie Preprocessor took 45.12ms. Allocated memory is still 115.3MB. Free memory was 58.4MB in the beginning and 54.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,485 INFO L158 Benchmark]: RCFGBuilder took 806.21ms. Allocated memory is still 115.3MB. Free memory was 54.2MB in the beginning and 41.1MB in the end (delta: 13.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,485 INFO L158 Benchmark]: TraceAbstraction took 1242.40ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 40.6MB in the beginning and 92.1MB in the end (delta: -51.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2021-11-07 11:19:29,486 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 144.7MB. Free memory is still 92.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 11:19:29,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1071.46ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 56.5MB in the beginning and 64.3MB in the end (delta: -7.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.29ms. Allocated memory is still 115.3MB. Free memory was 64.3MB in the beginning and 58.4MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.12ms. Allocated memory is still 115.3MB. Free memory was 58.4MB in the beginning and 54.8MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 806.21ms. Allocated memory is still 115.3MB. Free memory was 54.2MB in the beginning and 41.1MB in the end (delta: 13.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1242.40ms. Allocated memory was 115.3MB in the beginning and 144.7MB in the end (delta: 29.4MB). Free memory was 40.6MB in the beginning and 92.1MB in the end (delta: -51.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 144.7MB. Free memory is still 92.1MB. There was no memory consumed. Max. memory is 16.1GB. * 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 1037.23ms, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 26.99ms, AutomataDifference: 160.17ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.96ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 23.28ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 510 SdHoareTripleChecker+Invalid, 18.79ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 288 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 222 mSDtfsCounter, 13 mSolverCounterSat, 7.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.48ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 49.39ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.19ms SsaConstructionTime, 218.06ms SatisfiabilityAnalysisTime, 180.98ms 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 [2021-11-07 11:19:29,524 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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 e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 11:19:31,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 11:19:31,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 11:19:31,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 11:19:31,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 11:19:31,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 11:19:31,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 11:19:31,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 11:19:31,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 11:19:31,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 11:19:31,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 11:19:31,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 11:19:31,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 11:19:31,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 11:19:31,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 11:19:31,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 11:19:31,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 11:19:31,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 11:19:31,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 11:19:31,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 11:19:31,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 11:19:31,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 11:19:31,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 11:19:31,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 11:19:31,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 11:19:31,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 11:19:31,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 11:19:31,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 11:19:31,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 11:19:31,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 11:19:31,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 11:19:31,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 11:19:31,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 11:19:31,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 11:19:31,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 11:19:31,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 11:19:31,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 11:19:31,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 11:19:31,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 11:19:31,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 11:19:31,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 11:19:31,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 11:19:31,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 11:19:31,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 11:19:31,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 11:19:31,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 11:19:31,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 11:19:31,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 11:19:31,461 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 11:19:31,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 11:19:31,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 11:19:31,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 11:19:31,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 11:19:31,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 11:19:31,463 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 11:19:31,463 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 11:19:31,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 11:19:31,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 11:19:31,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 11:19:31,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 11:19:31,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 11:19:31,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 11:19:31,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 11:19:31,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 11:19:31,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 11:19:31,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 11:19:31,465 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 11:19:31,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 11:19:31,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 11:19:31,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 11:19:31,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 11:19:31,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 11:19:31,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 11:19:31,476 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-07 11:19:31,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 11:19:31,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 11:19:31,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 11:19:31,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 11:19:31,759 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 11:19:31,761 INFO L432 ainManager$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 [2021-11-07 11:19:31,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f8e4510/c5e43f1488044883a6d64d67967c5a6a/FLAGb1a69776d [2021-11-07 11:19:32,506 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 11:19:32,506 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 [2021-11-07 11:19:32,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f8e4510/c5e43f1488044883a6d64d67967c5a6a/FLAGb1a69776d [2021-11-07 11:19:32,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f8e4510/c5e43f1488044883a6d64d67967c5a6a [2021-11-07 11:19:32,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 11:19:32,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 11:19:32,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 11:19:32,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 11:19:32,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 11:19:32,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:32" (1/1) ... [2021-11-07 11:19:32,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5630983e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:32, skipping insertion in model container [2021-11-07 11:19:32,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:19:32" (1/1) ... [2021-11-07 11:19:32,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 11:19:32,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 11:19:33,672 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] [2021-11-07 11:19:33,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 11:19:33,715 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 11:19:33,948 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] [2021-11-07 11:19:33,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 11:19:34,003 INFO L208 MainTranslator]: Completed translation [2021-11-07 11:19:34,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34 WrapperNode [2021-11-07 11:19:34,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 11:19:34,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 11:19:34,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 11:19:34,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 11:19:34,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 11:19:34,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 11:19:34,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 11:19:34,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 11:19:34,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 11:19:34,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 11:19:34,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 11:19:34,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 11:19:34,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (1/1) ... [2021-11-07 11:19:34,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 11:19:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 11:19:34,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 11:19:34,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 11:19:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 11:19:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 11:19:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 11:19:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 11:19:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 11:19:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 11:19:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 11:19:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 11:19:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 11:19:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 11:19:35,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 11:19:35,421 INFO L299 CfgBuilder]: Removed 107 assume(true) statements. [2021-11-07 11:19:35,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:35 BoogieIcfgContainer [2021-11-07 11:19:35,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 11:19:35,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 11:19:35,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 11:19:35,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 11:19:35,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:19:32" (1/3) ... [2021-11-07 11:19:35,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efa6fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:35, skipping insertion in model container [2021-11-07 11:19:35,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:19:34" (2/3) ... [2021-11-07 11:19:35,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efa6fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:19:35, skipping insertion in model container [2021-11-07 11:19:35,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:35" (3/3) ... [2021-11-07 11:19:35,429 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-07 11:19:35,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 11:19:35,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 11:19:35,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 11:19:35,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 11:19:35,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 11:19:35,513 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) [2021-11-07 11:19:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 11:19:35,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:35,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 11:19:35,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:35,523 INFO L85 PathProgramCache]: Analyzing trace with hash -653166678, now seen corresponding path program 1 times [2021-11-07 11:19:35,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 11:19:35,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200906932] [2021-11-07 11:19:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:35,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 11:19:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 11:19:35,539 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) [2021-11-07 11:19:35,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 11:19:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 11:19:35,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 11:19:35,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 11:19:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 11:19:35,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 11:19:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 11:19:35,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 11:19:35,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200906932] [2021-11-07 11:19:35,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200906932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 11:19:35,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 11:19:35,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 11:19:35,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335504624] [2021-11-07 11:19:35,893 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 11:19:35,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 11:19:35,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 11:19:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 11:19:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 11:19:35,925 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) [2021-11-07 11:19:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 11:19:35,978 INFO L93 Difference]: Finished difference Result 235 states and 307 transitions. [2021-11-07 11:19:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 11:19:35,980 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 [2021-11-07 11:19:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 11:19:35,988 INFO L225 Difference]: With dead ends: 235 [2021-11-07 11:19:35,988 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 11:19:35,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 11:19:35,996 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.98ms IncrementalHoareTripleChecker+Time [2021-11-07 11:19:35,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 203 Invalid, 9 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.98ms Time] [2021-11-07 11:19:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 11:19:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 11:19:36,066 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) [2021-11-07 11:19:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 186 transitions. [2021-11-07 11:19:36,075 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 186 transitions. Word has length 9 [2021-11-07 11:19:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 11:19:36,075 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 186 transitions. [2021-11-07 11:19:36,076 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) [2021-11-07 11:19:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 186 transitions. [2021-11-07 11:19:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 11:19:36,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:36,078 INFO L514 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] [2021-11-07 11:19:36,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 11:19:36,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 11:19:36,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash 950528437, now seen corresponding path program 1 times [2021-11-07 11:19:36,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 11:19:36,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962878529] [2021-11-07 11:19:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:36,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 11:19:36,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 11:19:36,295 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) [2021-11-07 11:19:36,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 11:19:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 11:19:36,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 11:19:36,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 11:19:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 11:19:36,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 11:19:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 11:19:36,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 11:19:36,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962878529] [2021-11-07 11:19:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962878529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 11:19:36,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 11:19:36,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 11:19:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536406386] [2021-11-07 11:19:36,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 11:19:36,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 11:19:36,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 11:19:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 11:19:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 11:19:36,769 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) [2021-11-07 11:19:36,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 11:19:36,808 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2021-11-07 11:19:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 11:19:36,809 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 [2021-11-07 11:19:36,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 11:19:36,810 INFO L225 Difference]: With dead ends: 290 [2021-11-07 11:19:36,810 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 11:19:36,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.12ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 11:19:36,812 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.05ms IncrementalHoareTripleChecker+Time [2021-11-07 11:19:36,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 10 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 10.05ms Time] [2021-11-07 11:19:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 11:19:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 11:19:36,821 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) [2021-11-07 11:19:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2021-11-07 11:19:36,822 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 40 [2021-11-07 11:19:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 11:19:36,822 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2021-11-07 11:19:36,822 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) [2021-11-07 11:19:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2021-11-07 11:19:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 11:19:36,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 11:19:36,824 INFO L514 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] [2021-11-07 11:19:36,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 11:19:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 11:19:37,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 11:19:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 11:19:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1298860141, now seen corresponding path program 1 times [2021-11-07 11:19:37,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 11:19:37,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869000392] [2021-11-07 11:19:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 11:19:37,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 11:19:37,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 11:19:37,055 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) [2021-11-07 11:19:37,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 11:19:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 11:19:37,966 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 11:19:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 11:19:39,115 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-07 11:19:39,116 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-07 11:19:39,117 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-07 11:19:39,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-07 11:19:39,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 11:19:39,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 11:19:39,343 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 11:19:39,345 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 11:19:39,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:19:39 BoogieIcfgContainer [2021-11-07 11:19:39,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 11:19:39,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 11:19:39,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 11:19:39,438 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 11:19:39,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:19:35" (3/4) ... [2021-11-07 11:19:39,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 11:19:39,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 11:19:39,442 INFO L158 Benchmark]: Toolchain (without parser) took 6650.48ms. Allocated memory was 56.6MB in the beginning and 117.4MB in the end (delta: 60.8MB). Free memory was 29.4MB in the beginning and 64.6MB in the end (delta: -35.2MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,442 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 11:19:39,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1212.71ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 29.1MB in the beginning and 51.1MB in the end (delta: -21.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 136.01ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 45.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,443 INFO L158 Benchmark]: Boogie Preprocessor took 90.01ms. Allocated memory is still 96.5MB. Free memory was 45.2MB in the beginning and 60.2MB in the end (delta: -14.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,444 INFO L158 Benchmark]: RCFGBuilder took 1189.67ms. Allocated memory is still 96.5MB. Free memory was 60.2MB in the beginning and 38.7MB in the end (delta: 21.5MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,444 INFO L158 Benchmark]: TraceAbstraction took 4012.27ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 38.2MB in the beginning and 64.6MB in the end (delta: -26.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-07 11:19:39,445 INFO L158 Benchmark]: Witness Printer took 3.47ms. Allocated memory is still 117.4MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 11:19:39,447 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 38.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1212.71ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 29.1MB in the beginning and 51.1MB in the end (delta: -21.9MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 136.01ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 45.2MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.01ms. Allocated memory is still 96.5MB. Free memory was 45.2MB in the beginning and 60.2MB in the end (delta: -14.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1189.67ms. Allocated memory is still 96.5MB. Free memory was 60.2MB in the beginning and 38.7MB in the end (delta: 21.5MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4012.27ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 38.2MB in the beginning and 64.6MB in the end (delta: -26.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 3.47ms. Allocated memory is still 117.4MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L4222] tmp = init() [L4223] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L4353] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L4289] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L3935] return (err); [L3935] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [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={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L4385] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] [L4295] reach_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={-6917529027641081851:0}, id_table={-8070450532247928828:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-5764607523034234876:0}, virtio_blk={-2305843009213693948:0}] - 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: 3859.13ms, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 12.34ms, AutomataDifference: 147.89ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 14.05ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 20.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 611 SdHoareTripleChecker+Invalid, 16.13ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 222 mSDtfsCounter, 16 mSolverCounterSat, 7.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.96ms Time, 0.00ms 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, 0.00ms DumpTime, AutomataMinimizationStatistics: 74.06ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 88.27ms SsaConstructionTime, 1037.30ms SatisfiabilityAnalysisTime, 343.22ms 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 [2021-11-07 11:19:39,488 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample