./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d5417a05becbb9d46edf6af50ad8bf51bbb8a1b7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d5417a05becbb9d46edf6af50ad8bf51bbb8a1b7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:33,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:33,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:33,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:33,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:33,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:33,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:33,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:33,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:33,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:33,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:33,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:33,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:33,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:33,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:33,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:33,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:33,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:33,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:33,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:33,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:33,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:33,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:33,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:33,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:33,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:33,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:33,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:33,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:33,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:33,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:33,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:33,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:33,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:33,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:33,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:33,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:33,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:33,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:33,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:33,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:33,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2019-10-22 11:26:33,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:33,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:33,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:33,979 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:33,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:33,979 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:33,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:33,979 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:33,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:33,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:33,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:33,980 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:33,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:33,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:33,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:33,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:33,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:33,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:33,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:33,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:33,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:33,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:33,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:33,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:33,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:33,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:33,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:33,984 INFO L138 SettingsManager]: * To the following directory=dump/ [2019-10-22 11:26:33,985 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> d5417a05becbb9d46edf6af50ad8bf51bbb8a1b7 [2019-10-22 11:26:34,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:34,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:34,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:34,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:34,026 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:34,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:34,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/c143ad74a/cf05be9e42f143a2bc0507af6c1fa2c5/FLAGe8383cec9 [2019-10-22 11:26:34,726 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:34,727 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:34,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/c143ad74a/cf05be9e42f143a2bc0507af6c1fa2c5/FLAGe8383cec9 [2019-10-22 11:26:34,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/c143ad74a/cf05be9e42f143a2bc0507af6c1fa2c5 [2019-10-22 11:26:34,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:34,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:34,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:34,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:34,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:34,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:34" (1/1) ... [2019-10-22 11:26:34,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c0cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:34, skipping insertion in model container [2019-10-22 11:26:34,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:34" (1/1) ... [2019-10-22 11:26:34,851 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:34,959 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:36,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:36,045 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:36,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:36,355 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:36,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36 WrapperNode [2019-10-22 11:26:36,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:36,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:36,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:36,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:36,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:36,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:36,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:36,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:36,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... [2019-10-22 11:26:36,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:36,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:36,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:36,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:36,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:26:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:26:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 11:26:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:36,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:37,478 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:37,478 INFO L284 CfgBuilder]: Removed 99 assume(true) statements. [2019-10-22 11:26:37,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:37 BoogieIcfgContainer [2019-10-22 11:26:37,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:37,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:37,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:37,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:34" (1/3) ... [2019-10-22 11:26:37,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4aa52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:37, skipping insertion in model container [2019-10-22 11:26:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:36" (2/3) ... [2019-10-22 11:26:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4aa52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:37, skipping insertion in model container [2019-10-22 11:26:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:37" (3/3) ... [2019-10-22 11:26:37,490 INFO L109 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:37,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:37,512 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:26:37,524 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:26:37,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:37,554 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:37,554 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:37,554 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:37,554 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:37,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:37,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:37,555 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:26:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:37,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:37,583 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:37,585 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:37,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:37,594 INFO L82 PathProgramCache]: Analyzing trace with hash -653167574, now seen corresponding path program 1 times [2019-10-22 11:26:37,604 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:37,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299696711] [2019-10-22 11:26:37,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:37,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299696711] [2019-10-22 11:26:37,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:37,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:37,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526688747] [2019-10-22 11:26:37,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:37,936 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:37,955 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2019-10-22 11:26:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:38,022 INFO L93 Difference]: Finished difference Result 211 states and 271 transitions. [2019-10-22 11:26:38,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:38,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 11:26:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:38,040 INFO L225 Difference]: With dead ends: 211 [2019-10-22 11:26:38,042 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:26:38,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:26:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-22 11:26:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-22 11:26:38,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2019-10-22 11:26:38,109 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 9 [2019-10-22 11:26:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:38,110 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2019-10-22 11:26:38,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2019-10-22 11:26:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:38,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:38,112 INFO L380 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] [2019-10-22 11:26:38,113 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:38,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:38,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1281977442, now seen corresponding path program 1 times [2019-10-22 11:26:38,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:38,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247943144] [2019-10-22 11:26:38,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:38,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:38,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:38,339 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247943144] [2019-10-22 11:26:38,339 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:38,339 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:38,339 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959829290] [2019-10-22 11:26:38,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:38,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:38,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:38,342 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand 4 states. [2019-10-22 11:26:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:38,383 INFO L93 Difference]: Finished difference Result 258 states and 325 transitions. [2019-10-22 11:26:38,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:38,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-10-22 11:26:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:38,386 INFO L225 Difference]: With dead ends: 258 [2019-10-22 11:26:38,386 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:26:38,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:26:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-22 11:26:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-22 11:26:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 165 transitions. [2019-10-22 11:26:38,404 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 165 transitions. Word has length 38 [2019-10-22 11:26:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:38,404 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 165 transitions. [2019-10-22 11:26:38,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 165 transitions. [2019-10-22 11:26:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:38,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:38,406 INFO L380 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] [2019-10-22 11:26:38,407 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1218684480, now seen corresponding path program 1 times [2019-10-22 11:26:38,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:38,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426389224] [2019-10-22 11:26:38,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:38,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:38,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:39,212 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:39,213 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:39,307 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,309 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,318 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,318 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,319 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,319 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,320 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,321 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,323 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,323 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,324 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,324 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,325 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,325 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,327 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,328 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,328 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,329 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,330 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,331 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:39,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:39,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:39 BoogieIcfgContainer [2019-10-22 11:26:39,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:39,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:39,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:39,346 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:39,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:37" (3/4) ... [2019-10-22 11:26:39,350 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:26:39,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:39,353 INFO L168 Benchmark]: Toolchain (without parser) took 4523.67 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 249.0 MB). Free memory was 939.4 MB in the beginning and 1.2 GB in the end (delta: -239.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:39,353 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:39,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1526.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 934.0 MB in the beginning and 1.0 GB in the end (delta: -82.8 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:39,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:39,355 INFO L168 Benchmark]: Boogie Preprocessor took 68.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:39,356 INFO L168 Benchmark]: RCFGBuilder took 917.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 931.7 MB in the end (delta: 78.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:39,356 INFO L168 Benchmark]: TraceAbstraction took 1863.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 114.3 MB). Free memory was 931.7 MB in the beginning and 1.2 GB in the end (delta: -246.7 MB). Peak memory consumption was 171.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:39,357 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:39,360 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1526.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 934.0 MB in the beginning and 1.0 GB in the end (delta: -82.8 MB). Peak memory consumption was 65.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 137.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 917.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 931.7 MB in the end (delta: 78.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1863.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 114.3 MB). Free memory was 931.7 MB in the beginning and 1.2 GB in the end (delta: -246.7 MB). Peak memory consumption was 171.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4280]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 4170. Possible FailurePath: [L3633] static int major ; [L3634] static int index ; [L3959-L3960] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4158-L4159] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4160-L4163] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4164-L4165] 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}; [L4187] struct virtio_device_id const __mod_virtio_device_table ; [L4192] int LDV_IN_INTERRUPT ; [L4333] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4195] struct block_device *var_group1 ; [L4196] fmode_t var_virtblk_ioctl_5_p1 ; [L4197] unsigned int var_virtblk_ioctl_5_p2 ; [L4198] unsigned long var_virtblk_ioctl_5_p3 ; [L4199] struct hd_geometry *var_group2 ; [L4200] int tmp ; [L4201] int tmp___0 ; [L4202] int tmp___1 ; [L4204] LDV_IN_INTERRUPT = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4168] int tmp ; [L4170] CALL, EXPR register_blkdev(0U, "virtblk") [L4523] return __VERIFIER_nondet_int(); [L4170] major = register_blkdev(0U, "virtblk") [L4171] COND FALSE !(major < 0) [L4527] return __VERIFIER_nondet_int(); [L4175] tmp = register_virtio_driver(& virtio_blk) [L4176] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4207] tmp = init() [L4208] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4229] tmp___1 = __VERIFIER_nondet_int() [L4230] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4214] tmp___0 = __VERIFIER_nondet_int() [L4216] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3897] struct gendisk *disk ; [L3898] struct virtio_blk *vblk ; [L3899] void *usr_data ; [L3900] char id_str[20U] ; [L3901] int err ; [L3902] int tmp ; [L3903] bool tmp___0 ; [L3904] int tmp___1 ; [L3905] int tmp___2 ; [L3907] EXPR bdev->bd_disk [L3907] disk = bdev->bd_disk [L3908] EXPR disk->private_data [L3908] vblk = (struct virtio_blk *)disk->private_data [L3909] COND TRUE cmd == 1447184708U [L3910] usr_data = (void *)data [L3864] struct virtio_blk *vblk ; [L3865] struct request *req ; [L3866] struct bio *bio ; [L3867] long tmp ; [L3868] long tmp___0 ; [L3869] long tmp___1 ; [L3870] long tmp___2 ; [L3871] int tmp___3 ; [L3873] EXPR disk->private_data [L3873] vblk = (struct virtio_blk *)disk->private_data [L3874] EXPR vblk->disk [L3874] EXPR (vblk->disk)->queue [L4561] return __VERIFIER_nondet_pointer(); [L4414] return (struct bio *)external_alloc(); [L3874] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4259] long tmp ; [L4292] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4261] tmp = ldv_is_err(ptr) [L4262] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3875] tmp___0 = IS_ERR((void const *)bio) [L3876] COND FALSE !(tmp___0 != 0L) [L3881] EXPR vblk->disk [L3881] EXPR (vblk->disk)->queue [L4268] ldv_func_ret_type___3 ldv_func_res ; [L4269] struct request *tmp ; [L4561] return __VERIFIER_nondet_pointer(); [L4432] return (struct request *)external_alloc(); [L4271] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4272] ldv_func_res = tmp [L4336] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4338] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4342] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4343] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4274] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3881] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4259] long tmp ; [L4292] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4261] tmp = ldv_is_err(ptr) [L4262] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3882] tmp___2 = IS_ERR((void const *)req) [L3883] COND FALSE !(tmp___2 != 0L) [L3889] req->cmd_type = 7 [L3890] EXPR vblk->disk [L3890] EXPR (vblk->disk)->queue [L3890] EXPR vblk->disk [L4424] return __VERIFIER_nondet_int(); [L3890] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3891] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3911] err = virtblk_get_id(disk, (char *)(& id_str)) [L3912] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L3920] return (err); [L3920] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4229] tmp___1 = __VERIFIER_nondet_int() [L4230] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4370] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] [L4280] __VERIFIER_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={18446744073709551617:18446744073709551622}, features={8:0}, id_table={18:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={7:0}, virtio_blk={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 2 error locations. Result: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 88 SDslu, 258 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1841 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:41,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:41,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:41,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:41,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:41,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:41,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:41,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:41,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:41,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:41,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:41,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:41,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:41,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:41,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:41,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:41,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:41,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:41,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:41,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:41,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:41,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:41,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:41,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:41,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:41,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:41,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:41,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:41,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:41,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:41,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:41,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:41,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:41,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:41,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:41,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:41,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:41,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:41,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:41,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:41,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:41,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2019-10-22 11:26:41,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:41,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:41,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:41,711 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:41,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:41,712 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:41,712 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:41,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:41,712 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:41,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:41,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:41,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:41,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:41,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:41,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:41,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:41,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:41,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:41,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:41,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:41,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:41,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:41,717 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:41,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:41,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:41,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:41,717 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> d5417a05becbb9d46edf6af50ad8bf51bbb8a1b7 [2019-10-22 11:26:41,746 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:41,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:41,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:41,761 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:41,761 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:41,762 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:41,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/76e31b2d9/560aa55c8b6a41f6b0e05cf11ad41ae5/FLAG11fedccab [2019-10-22 11:26:42,446 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:42,450 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:42,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/76e31b2d9/560aa55c8b6a41f6b0e05cf11ad41ae5/FLAG11fedccab [2019-10-22 11:26:42,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/data/76e31b2d9/560aa55c8b6a41f6b0e05cf11ad41ae5 [2019-10-22 11:26:42,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:42,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:42,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:42,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:42,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:42,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:42" (1/1) ... [2019-10-22 11:26:42,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a639e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:42, skipping insertion in model container [2019-10-22 11:26:42,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:42" (1/1) ... [2019-10-22 11:26:42,595 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:42,697 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:43,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:43,877 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:44,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:44,328 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:44,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44 WrapperNode [2019-10-22 11:26:44,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:44,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:44,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:44,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:44,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:44,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:44,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:44,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:44,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... [2019-10-22 11:26:44,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:44,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:44,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:44,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:44,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-10-22 11:26:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-10-22 11:26:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2019-10-22 11:26:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:26:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:26:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-10-22 11:26:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:45,953 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:45,954 INFO L284 CfgBuilder]: Removed 99 assume(true) statements. [2019-10-22 11:26:45,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:45 BoogieIcfgContainer [2019-10-22 11:26:45,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:45,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:45,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:45,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:45,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:42" (1/3) ... [2019-10-22 11:26:45,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:45, skipping insertion in model container [2019-10-22 11:26:45,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:44" (2/3) ... [2019-10-22 11:26:45,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:45, skipping insertion in model container [2019-10-22 11:26:45,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:45" (3/3) ... [2019-10-22 11:26:45,964 INFO L109 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2019-10-22 11:26:45,974 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:45,985 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:26:45,997 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:26:46,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:46,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:46,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:46,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:46,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:46,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:46,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:46,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:26:46,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:46,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:46,048 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:46,050 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash -653167574, now seen corresponding path program 1 times [2019-10-22 11:26:46,072 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:46,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1809109350] [2019-10-22 11:26:46,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:46,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:26:46,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:46,408 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:46,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1809109350] [2019-10-22 11:26:46,414 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:46,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:26:46,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264626304] [2019-10-22 11:26:46,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:46,419 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:46,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:46,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:46,437 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2019-10-22 11:26:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:46,509 INFO L93 Difference]: Finished difference Result 211 states and 271 transitions. [2019-10-22 11:26:46,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:46,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-22 11:26:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:46,524 INFO L225 Difference]: With dead ends: 211 [2019-10-22 11:26:46,525 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:26:46,528 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:26:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-22 11:26:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-22 11:26:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2019-10-22 11:26:46,593 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 9 [2019-10-22 11:26:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:46,594 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2019-10-22 11:26:46,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:46,594 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2019-10-22 11:26:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:46,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:46,598 INFO L380 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] [2019-10-22 11:26:46,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:46,799 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:46,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1281977442, now seen corresponding path program 1 times [2019-10-22 11:26:46,800 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:46,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1831080840] [2019-10-22 11:26:46,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:47,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:47,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:47,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:47,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831080840] [2019-10-22 11:26:47,475 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:47,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:26:47,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015430874] [2019-10-22 11:26:47,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:47,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:47,479 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand 6 states. [2019-10-22 11:26:47,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:47,526 INFO L93 Difference]: Finished difference Result 258 states and 325 transitions. [2019-10-22 11:26:47,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:47,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:26:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:47,529 INFO L225 Difference]: With dead ends: 258 [2019-10-22 11:26:47,529 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 11:26:47,531 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 11:26:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2019-10-22 11:26:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-10-22 11:26:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 165 transitions. [2019-10-22 11:26:47,597 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 165 transitions. Word has length 38 [2019-10-22 11:26:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:47,598 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 165 transitions. [2019-10-22 11:26:47,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 165 transitions. [2019-10-22 11:26:47,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:47,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:47,600 INFO L380 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] [2019-10-22 11:26:47,800 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:47,800 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1218684480, now seen corresponding path program 1 times [2019-10-22 11:26:47,803 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:47,803 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [732611527] [2019-10-22 11:26:47,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5842f9b-b929-4f16-bc1a-be688ecb0622/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:51,601 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:51,607 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:51,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:51,906 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,907 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,915 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,915 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,916 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,916 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,917 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,918 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,918 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,919 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,921 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,923 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,925 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,925 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,926 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,928 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,928 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,928 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!device [2019-10-22 11:26:51,930 WARN L1295 BoogieBacktranslator]: unknown boogie variable ~__mod_virtio_device_table~0!vendor [2019-10-22 11:26:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:51 BoogieIcfgContainer [2019-10-22 11:26:51,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:51,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:51,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:51,942 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:51,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:45" (3/4) ... [2019-10-22 11:26:51,948 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:26:51,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:51,951 INFO L168 Benchmark]: Toolchain (without parser) took 9371.27 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.2 MB). Free memory was 945.5 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:51,951 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:51,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1749.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 945.5 MB in the beginning and 1.0 GB in the end (delta: -88.7 MB). Peak memory consumption was 78.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:51,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:51,953 INFO L168 Benchmark]: Boogie Preprocessor took 104.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:51,953 INFO L168 Benchmark]: RCFGBuilder took 1375.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 945.1 MB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:51,954 INFO L168 Benchmark]: TraceAbstraction took 5984.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:51,954 INFO L168 Benchmark]: Witness Printer took 7.42 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:51,958 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1749.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 945.5 MB in the beginning and 1.0 GB in the end (delta: -88.7 MB). Peak memory consumption was 78.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 145.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 104.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1375.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 945.1 MB in the end (delta: 76.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5984.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 7.42 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!device - GenericResult: Unfinished Backtranslation unknown boogie variable ~__mod_virtio_device_table~0!vendor * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4280]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of large string literal at line 4170. Possible FailurePath: [L3633] static int major ; [L3634] static int index ; [L3959-L3960] static struct block_device_operations const virtblk_fops = {0, 0, & virtblk_ioctl, 0, 0, 0, 0, 0, 0, & virtblk_getgeo, 0, & __this_module}; [L4158-L4159] static struct virtio_device_id const id_table[2U] = { {2U, 4294967295U}, {0U, 0U}}; [L4160-L4163] static unsigned int features[9U] = { 0U, 2U, 1U, 4U, 5U, 6U, 7U, 9U, 10U}; [L4164-L4165] 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}; [L4187] struct virtio_device_id const __mod_virtio_device_table ; [L4192] int LDV_IN_INTERRUPT ; [L4333] int ldv_blk_rq = 0; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=0, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4195] struct block_device *var_group1 ; [L4196] fmode_t var_virtblk_ioctl_5_p1 ; [L4197] unsigned int var_virtblk_ioctl_5_p2 ; [L4198] unsigned long var_virtblk_ioctl_5_p3 ; [L4199] struct hd_geometry *var_group2 ; [L4200] int tmp ; [L4201] int tmp___0 ; [L4202] int tmp___1 ; [L4204] LDV_IN_INTERRUPT = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4168] int tmp ; [L4170] CALL, EXPR register_blkdev(0U, "virtblk") [L4523] return __VERIFIER_nondet_int(); [L4170] major = register_blkdev(0U, "virtblk") [L4171] COND FALSE !(major < 0) [L4527] return __VERIFIER_nondet_int(); [L4175] tmp = register_virtio_driver(& virtio_blk) [L4176] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4207] tmp = init() [L4208] COND FALSE !(tmp != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4229] tmp___1 = __VERIFIER_nondet_int() [L4230] COND TRUE tmp___1 != 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4214] tmp___0 = __VERIFIER_nondet_int() [L4216] case 0: VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3897] struct gendisk *disk ; [L3898] struct virtio_blk *vblk ; [L3899] void *usr_data ; [L3900] char id_str[20U] ; [L3901] int err ; [L3902] int tmp ; [L3903] bool tmp___0 ; [L3904] int tmp___1 ; [L3905] int tmp___2 ; [L3907] EXPR bdev->bd_disk [L3907] disk = bdev->bd_disk [L3908] EXPR disk->private_data [L3908] vblk = (struct virtio_blk *)disk->private_data [L3909] COND TRUE cmd == 1447184708U [L3910] usr_data = (void *)data [L3864] struct virtio_blk *vblk ; [L3865] struct request *req ; [L3866] struct bio *bio ; [L3867] long tmp ; [L3868] long tmp___0 ; [L3869] long tmp___1 ; [L3870] long tmp___2 ; [L3871] int tmp___3 ; [L3873] EXPR disk->private_data [L3873] vblk = (struct virtio_blk *)disk->private_data [L3874] EXPR vblk->disk [L3874] EXPR (vblk->disk)->queue [L4561] return __VERIFIER_nondet_pointer(); [L4414] return (struct bio *)external_alloc(); [L3874] bio = bio_map_kern((vblk->disk)->queue, (void *)id_str, 20U, 208U) [L4259] long tmp ; [L4292] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4261] tmp = ldv_is_err(ptr) [L4262] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3875] tmp___0 = IS_ERR((void const *)bio) [L3876] COND FALSE !(tmp___0 != 0L) [L3881] EXPR vblk->disk [L3881] EXPR (vblk->disk)->queue [L4268] ldv_func_ret_type___3 ldv_func_res ; [L4269] struct request *tmp ; [L4561] return __VERIFIER_nondet_pointer(); [L4432] return (struct request *)external_alloc(); [L4271] tmp = blk_make_request(ldv_func_arg1, ldv_func_arg2, ldv_func_arg3) [L4272] ldv_func_res = tmp [L4336] long tmp ; VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4338] COND TRUE ldv_blk_rq == 0 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=0, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4342] COND TRUE (mask == 16U || mask == 208U) || mask == 16U [L4343] ldv_blk_rq = 1 VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4274] return (ldv_func_res); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3881] req = ldv_blk_make_request_5((vblk->disk)->queue, bio, 208U) [L4259] long tmp ; [L4292] return ((unsigned long )ptr > 2012UL); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4261] tmp = ldv_is_err(ptr) [L4262] return (tmp); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3882] tmp___2 = IS_ERR((void const *)req) [L3883] COND FALSE !(tmp___2 != 0L) [L3889] req->cmd_type = 7 [L3890] EXPR vblk->disk [L3890] EXPR (vblk->disk)->queue [L3890] EXPR vblk->disk [L4424] return __VERIFIER_nondet_int(); [L3890] tmp___3 = blk_execute_rq((vblk->disk)->queue, vblk->disk, req, 0) [L3891] return (tmp___3); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3911] err = virtblk_get_id(disk, (char *)(& id_str)) [L3912] COND FALSE !(err == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L3920] return (err); [L3920] return (err); VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4229] tmp___1 = __VERIFIER_nondet_int() [L4230] COND FALSE !(tmp___1 != 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4370] COND FALSE !(ldv_blk_rq == 0) VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] [L4280] __VERIFIER_error() VAL [__mod_virtio_device_table=0, __mod_virtio_device_table=0, __this_module={0:0}, features={1049:0}, id_table={-2147482599:0}, index=0, ldv_blk_rq=1, LDV_IN_INTERRUPT=1, major=0, virtblk_fops={-2147449829:0}, virtio_blk={1073742873:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 2 error locations. Result: UNSAFE, OverallTime: 5.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 89 SDslu, 258 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3460 SizeOfPredicates, 4 NumberOfNonLiveVariables, 495 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...