./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 32bit --witnessprinter.graph.data.programhash bebd3708d0e1127b0953933828504d3490382862 ........................................................................................................................................................................................................................................................................................................................................................................................... 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/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 32bit --witnessprinter.graph.data.programhash bebd3708d0e1127b0953933828504d3490382862 .................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:36:08,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:08,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:08,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:08,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:08,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:08,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:08,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:08,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:08,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:08,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:08,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:08,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:08,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:08,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:08,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:08,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:08,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:08,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:08,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:08,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:08,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:08,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:08,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:08,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:08,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:08,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:08,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:08,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:08,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:08,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:08,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:08,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:08,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:08,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:08,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:08,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:08,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:08,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:08,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:08,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:08,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:36:08,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:08,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:08,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:08,884 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:08,885 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:08,885 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:08,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:36:08,885 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:08,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:08,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:36:08,886 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:36:08,886 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:08,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:36:08,887 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:36:08,887 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:36:08,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:08,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:36:08,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:36:08,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:36:08,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:08,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:08,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:08,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:08,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:08,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:08,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:08,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:08,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:08,891 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:36:08,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:36:08,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:08,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:08,892 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/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bebd3708d0e1127b0953933828504d3490382862 [2019-11-26 02:36:09,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:09,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:09,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:09,084 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:09,084 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:09,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-26 02:36:09,138 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/49fac4a4b/6e904fec74f642e8a7498331336fb426/FLAG40b9d4513 [2019-11-26 02:36:09,571 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:09,572 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-26 02:36:09,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/49fac4a4b/6e904fec74f642e8a7498331336fb426/FLAG40b9d4513 [2019-11-26 02:36:09,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/49fac4a4b/6e904fec74f642e8a7498331336fb426 [2019-11-26 02:36:09,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:09,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:09,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:09,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:09,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:09,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2644ab29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:09, skipping insertion in model container [2019-11-26 02:36:09,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:09" (1/1) ... [2019-11-26 02:36:09,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:09,945 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:10,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:10,320 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:10,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:10,433 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:10,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10 WrapperNode [2019-11-26 02:36:10,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:10,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:10,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:10,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:10,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:10,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:10,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:10,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:10,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... [2019-11-26 02:36:10,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:10,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:10,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:10,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:10,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 [2019-11-26 02:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:36:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:36:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:11,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:11,024 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-26 02:36:11,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:11 BoogieIcfgContainer [2019-11-26 02:36:11,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:11,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:11,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:11,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:11,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:09" (1/3) ... [2019-11-26 02:36:11,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cb369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:11, skipping insertion in model container [2019-11-26 02:36:11,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:10" (2/3) ... [2019-11-26 02:36:11,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401cb369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:11, skipping insertion in model container [2019-11-26 02:36:11,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:11" (3/3) ... [2019-11-26 02:36:11,033 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-11-26 02:36:11,042 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:11,047 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:36:11,055 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:36:11,072 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:11,072 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:11,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:11,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:11,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:11,073 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:11,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:11,073 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-26 02:36:11,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:36:11,090 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:11,090 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:36:11,090 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:11,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1037880396, now seen corresponding path program 1 times [2019-11-26 02:36:11,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:11,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747253939] [2019-11-26 02:36:11,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:11,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747253939] [2019-11-26 02:36:11,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:11,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:36:11,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325672416] [2019-11-26 02:36:11,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:11,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:11,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:11,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:11,289 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-11-26 02:36:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:11,328 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2019-11-26 02:36:11,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:11,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:36:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:11,338 INFO L225 Difference]: With dead ends: 33 [2019-11-26 02:36:11,339 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 02:36:11,347 INFO L630 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 [2019-11-26 02:36:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 02:36:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-26 02:36:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:36:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-26 02:36:11,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2019-11-26 02:36:11,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:11,387 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-26 02:36:11,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-26 02:36:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:36:11,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:11,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:11,387 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1448138322, now seen corresponding path program 1 times [2019-11-26 02:36:11,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:11,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049785612] [2019-11-26 02:36:11,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:11,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049785612] [2019-11-26 02:36:11,501 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025995172] [2019-11-26 02:36:11,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:11,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:36:11,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:11,635 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:11,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1509997996] [2019-11-26 02:36:11,676 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:36:11,676 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:36:11,681 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:36:11,686 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:36:11,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:36:11,909 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:12,303 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:12,964 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2019-11-26 02:36:13,288 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:13,977 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:14,615 WARN L213 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:15,038 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:15,216 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:15,545 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:15,642 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:15,657 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-26 02:36:16,088 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:36:16,731 WARN L192 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2019-11-26 02:36:16,884 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-11-26 02:36:16,902 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:36:16,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:36:16,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-26 02:36:16,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175889787] [2019-11-26 02:36:16,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:36:16,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:16,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:36:16,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:16,905 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 6 states. [2019-11-26 02:36:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:16,954 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2019-11-26 02:36:16,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:36:16,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-26 02:36:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:16,956 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:36:16,956 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:36:16,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:36:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:36:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:36:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:36:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-26 02:36:16,960 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2019-11-26 02:36:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:16,960 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-26 02:36:16,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:36:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-26 02:36:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-26 02:36:16,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:16,963 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:17,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:17,166 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1796988628, now seen corresponding path program 2 times [2019-11-26 02:36:17,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:17,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743628503] [2019-11-26 02:36:17,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:36:17,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743628503] [2019-11-26 02:36:17,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91259910] [2019-11-26 02:36:17,493 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:18,841 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-26 02:36:18,842 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:18,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-26 02:36:18,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:36:19,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:19,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:19,445 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:36:19,448 INFO L168 Benchmark]: Toolchain (without parser) took 9564.90 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 226.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:19,448 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:19,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:19,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:19,449 INFO L168 Benchmark]: Boogie Preprocessor took 36.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:19,449 INFO L168 Benchmark]: RCFGBuilder took 510.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:19,450 INFO L168 Benchmark]: TraceAbstraction took 8420.57 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 108.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -91.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:19,452 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 549.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 510.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8420.57 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 108.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -91.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:36:21,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:21,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:21,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:21,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:21,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:21,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:21,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:21,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:21,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:21,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:21,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:21,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:21,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:21,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:21,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:21,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:21,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:21,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:21,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:21,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:21,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:21,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:21,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:21,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:21,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:21,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:21,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:21,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:21,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:21,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:21,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:21,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:21,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:21,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:21,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:21,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:21,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:21,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:21,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:21,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:21,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:36:21,554 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:21,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:21,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:21,555 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:21,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:21,556 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:21,556 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:21,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:21,556 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:21,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:21,557 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:36:21,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:36:21,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:21,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:21,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:21,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:21,559 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:36:21,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:36:21,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:36:21,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:36:21,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:21,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:36:21,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:21,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:21,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:36:21,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:21,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:21,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:21,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:21,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:21,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:21,564 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:36:21,564 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:36:21,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:21,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:21,565 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/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bebd3708d0e1127b0953933828504d3490382862 [2019-11-26 02:36:21,840 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:21,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:21,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:21,855 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:21,855 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:21,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-26 02:36:21,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/afbcaeb80/155cca7b92c041189dd4c43320bef982/FLAGe2a7100e5 [2019-11-26 02:36:22,385 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:22,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2019-11-26 02:36:22,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/afbcaeb80/155cca7b92c041189dd4c43320bef982/FLAGe2a7100e5 [2019-11-26 02:36:22,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/data/afbcaeb80/155cca7b92c041189dd4c43320bef982 [2019-11-26 02:36:22,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:22,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:22,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:22,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:22,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:22,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:22" (1/1) ... [2019-11-26 02:36:22,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac5e758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:22, skipping insertion in model container [2019-11-26 02:36:22,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:22" (1/1) ... [2019-11-26 02:36:22,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:22,800 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:23,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:23,187 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:23,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:23,283 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:23,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23 WrapperNode [2019-11-26 02:36:23,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:23,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:23,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:23,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:23,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:23,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:23,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:23,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:23,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... [2019-11-26 02:36:23,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:23,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:23,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:23,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:23,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:36:23,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:36:23,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:23,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:23,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:23,859 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-26 02:36:23,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:23 BoogieIcfgContainer [2019-11-26 02:36:23,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:23,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:23,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:23,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:23,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:22" (1/3) ... [2019-11-26 02:36:23,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1411a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:23, skipping insertion in model container [2019-11-26 02:36:23,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:23" (2/3) ... [2019-11-26 02:36:23,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1411a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:23, skipping insertion in model container [2019-11-26 02:36:23,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:23" (3/3) ... [2019-11-26 02:36:23,865 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2019-11-26 02:36:23,873 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:23,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:36:23,886 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:36:23,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:23,906 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:23,907 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:23,907 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:23,907 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:23,907 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:23,907 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:23,907 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-26 02:36:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:36:23,925 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:23,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:23,927 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-26 02:36:23,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:36:23,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [888693186] [2019-11-26 02:36:23,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 [2019-11-26 02:36:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:24,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:36:24,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,102 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [888693186] [2019-11-26 02:36:24,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:36:24,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34628970] [2019-11-26 02:36:24,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:36:24,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:36:24,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:36:24,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:36:24,144 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-26 02:36:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:24,311 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-26 02:36:24,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:36:24,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-26 02:36:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:24,327 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:36:24,327 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 02:36:24,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:36:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 02:36:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-26 02:36:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-26 02:36:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-26 02:36:24,360 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-11-26 02:36:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:24,361 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-26 02:36:24,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:36:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-26 02:36:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-26 02:36:24,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:24,362 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:24,563 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:36:24,566 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-11-26 02:36:24,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:36:24,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [138821786] [2019-11-26 02:36:24,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/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 [2019-11-26 02:36:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:24,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:36:24,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,731 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138821786] [2019-11-26 02:36:24,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545493117] [2019-11-26 02:36:24,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:24,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-26 02:36:24,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,902 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:36:24,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:36:25,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 6] total 10 [2019-11-26 02:36:25,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47134313] [2019-11-26 02:36:25,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:36:25,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:36:25,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:36:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:36:25,006 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 10 states. [2019-11-26 02:36:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:25,691 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-11-26 02:36:25,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:36:25,692 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-26 02:36:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:25,693 INFO L225 Difference]: With dead ends: 45 [2019-11-26 02:36:25,693 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 02:36:25,694 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:36:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 02:36:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-26 02:36:25,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:36:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-11-26 02:36:25,701 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 16 [2019-11-26 02:36:25,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:25,701 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-11-26 02:36:25,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:36:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-11-26 02:36:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-26 02:36:25,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:25,703 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:36:26,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:36:26,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-11-26 02:36:26,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:36:26,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [337019621] [2019-11-26 02:36:26,116 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5e5987cf-b0be-4133-9544-2394dec4db7c/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:36:26,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:36:26,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:36:26,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-26 02:36:26,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:36:26,604 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-26 02:36:26,604 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,622 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,623 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,623 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-11-26 02:36:26,685 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,685 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-26 02:36:26,686 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,698 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,699 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,699 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:17 [2019-11-26 02:36:26,751 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2019-11-26 02:36:26,752 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,777 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,777 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:17 [2019-11-26 02:36:26,808 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:36:26,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,858 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:36:26,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:36:26,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 18 [2019-11-26 02:36:26,864 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,880 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,881 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,881 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:14 [2019-11-26 02:36:26,960 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-26 02:36:26,960 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,966 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:26,967 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:26,967 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-26 02:36:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-26 02:36:26,985 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:36:27,080 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:36:27,103 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:27,108 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:36:27,121 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:27,122 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:36:27,122 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:22 [2019-11-26 02:36:27,182 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_32|], 2=[|v_#memory_int_36|]} [2019-11-26 02:36:27,227 INFO L343 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2019-11-26 02:36:27,228 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2019-11-26 02:36:27,228 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-26 02:36:27,267 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:35,335 WARN L192 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 27 [2019-11-26 02:36:35,335 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:35,336 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 76 [2019-11-26 02:36:35,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:35,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:36:35,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:35,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:35,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:36:35,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:36:35,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:35,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:35,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:36:35,374 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2019-11-26 02:36:35,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:36:35,382 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:36:35,384 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-26 02:36:35,389 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:36:35,401 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2019-11-26 02:36:35,401 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-26 02:36:35,412 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:35,413 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:36:49,684 WARN L192 SmtUtils]: Spent 14.27 s on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-11-26 02:36:49,685 INFO L567 ElimStorePlain]: treesize reduction 8, result has 89.3 percent of original size [2019-11-26 02:36:49,698 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:36:49,698 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2019-11-26 02:36:49,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:49,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:49,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:36:49,708 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-26 02:36:49,708 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_8]} [2019-11-26 02:36:49,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:36:49,915 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-26 02:36:49,919 INFO L168 Benchmark]: Toolchain (without parser) took 27184.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 949.7 MB in the beginning and 919.5 MB in the end (delta: 30.2 MB). Peak memory consumption was 189.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:49,919 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:49,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:49,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:49,921 INFO L168 Benchmark]: Boogie Preprocessor took 41.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:49,921 INFO L168 Benchmark]: RCFGBuilder took 487.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:49,922 INFO L168 Benchmark]: TraceAbstraction took 26056.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.5 MB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:49,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 548.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 487.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26056.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.5 MB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...