./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 94522ad0a42fd7eae1597f2a0d5f88526d7c71c8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 94522ad0a42fd7eae1597f2a0d5f88526d7c71c8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:42:17,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:42:17,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:42:17,933 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:42:17,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:42:17,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:42:17,935 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:42:17,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:42:17,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:42:17,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:42:17,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:42:17,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:42:17,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:42:17,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:42:17,941 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:42:17,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:42:17,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:42:17,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:42:17,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:42:17,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:42:17,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:42:17,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:42:17,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:42:17,949 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:42:17,949 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:42:17,950 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:42:17,951 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:42:17,951 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:42:17,952 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:42:17,953 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:42:17,953 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:42:17,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:42:17,954 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:42:17,954 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:42:17,954 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:42:17,955 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:42:17,955 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 21:42:17,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:42:17,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:42:17,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:42:17,966 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:42:17,966 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 21:42:17,967 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 21:42:17,967 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 21:42:17,968 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 21:42:17,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:42:17,968 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:42:17,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:42:17,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:42:17,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:42:17,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:42:17,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 21:42:17,971 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 21:42:17,972 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 -> 94522ad0a42fd7eae1597f2a0d5f88526d7c71c8 [2018-11-22 21:42:17,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:42:18,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:42:18,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:42:18,008 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:42:18,009 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:42:18,009 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:18,041 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/8704cba38/5e84d9831fc6481bb42ad70e5e47bc45/FLAGd14b2209b [2018-11-22 21:42:18,473 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:42:18,474 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:18,486 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/8704cba38/5e84d9831fc6481bb42ad70e5e47bc45/FLAGd14b2209b [2018-11-22 21:42:18,495 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/8704cba38/5e84d9831fc6481bb42ad70e5e47bc45 [2018-11-22 21:42:18,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:42:18,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:42:18,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:42:18,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:42:18,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:42:18,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3447f9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18, skipping insertion in model container [2018-11-22 21:42:18,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:42:18,535 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:42:18,714 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:42:18,722 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:42:18,795 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:42:18,819 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:42:18,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18 WrapperNode [2018-11-22 21:42:18,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:42:18,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:42:18,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:42:18,820 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:42:18,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:42:18,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:42:18,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:42:18,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:42:18,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... [2018-11-22 21:42:18,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:42:18,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:42:18,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:42:18,861 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:42:18,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-11-22 21:42:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-22 21:42:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 21:42:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:42:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:42:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:42:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:42:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 21:42:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 21:42:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 21:42:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:42:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:42:19,100 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:42:19,100 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 21:42:19,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:42:19 BoogieIcfgContainer [2018-11-22 21:42:19,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:42:19,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:42:19,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:42:19,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:42:19,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:42:18" (1/3) ... [2018-11-22 21:42:19,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c0ea90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:42:19, skipping insertion in model container [2018-11-22 21:42:19,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:18" (2/3) ... [2018-11-22 21:42:19,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c0ea90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:42:19, skipping insertion in model container [2018-11-22 21:42:19,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:42:19" (3/3) ... [2018-11-22 21:42:19,106 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:19,111 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:42:19,116 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:42:19,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:42:19,144 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:42:19,144 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:42:19,144 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:42:19,144 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:42:19,144 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:42:19,144 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:42:19,144 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:42:19,144 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:42:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-22 21:42:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:42:19,159 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:19,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:19,162 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:19,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash 168395423, now seen corresponding path program 1 times [2018-11-22 21:42:19,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:19,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:19,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,199 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:19,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:42:19,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:42:19,262 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 21:42:19,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 21:42:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 21:42:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:42:19,274 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-11-22 21:42:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:19,288 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-11-22 21:42:19,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:42:19,289 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-22 21:42:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:19,296 INFO L225 Difference]: With dead ends: 53 [2018-11-22 21:42:19,296 INFO L226 Difference]: Without dead ends: 26 [2018-11-22 21:42:19,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:42:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-22 21:42:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-22 21:42:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-22 21:42:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-22 21:42:19,321 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2018-11-22 21:42:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:19,321 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-22 21:42:19,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 21:42:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-22 21:42:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:42:19,322 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:19,322 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:19,322 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:19,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash 729507883, now seen corresponding path program 1 times [2018-11-22 21:42:19,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:19,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:19,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,324 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:19,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:42:19,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 21:42:19,413 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 21:42:19,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 21:42:19,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 21:42:19,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:42:19,414 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-22 21:42:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:19,456 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-11-22 21:42:19,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 21:42:19,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-22 21:42:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:19,458 INFO L225 Difference]: With dead ends: 42 [2018-11-22 21:42:19,458 INFO L226 Difference]: Without dead ends: 29 [2018-11-22 21:42:19,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 21:42:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-22 21:42:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-22 21:42:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-22 21:42:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-11-22 21:42:19,462 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2018-11-22 21:42:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:19,463 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-22 21:42:19,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 21:42:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-11-22 21:42:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 21:42:19,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:19,463 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:19,464 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:19,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:19,464 INFO L82 PathProgramCache]: Analyzing trace with hash 922487694, now seen corresponding path program 1 times [2018-11-22 21:42:19,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:19,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:19,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,465 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:19,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:19,537 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 21:42:19,538 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-11-22 21:42:19,539 INFO L202 CegarAbsIntRunner]: [5], [6], [10], [12], [16], [19], [51], [54], [60], [62], [69], [71], [77], [79], [83], [84], [85], [86], [87], [89], [90] [2018-11-22 21:42:19,560 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 21:42:19,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 21:42:19,726 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-22 21:42:19,727 INFO L272 AbstractInterpreter]: Visited 21 different actions 36 times. Merged at 6 different actions 12 times. Never widened. Performed 396 root evaluator evaluations with a maximum evaluation depth of 3. Performed 396 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 2 fixpoints after 2 different actions. Largest state had 31 variables. [2018-11-22 21:42:19,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:19,735 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-22 21:42:19,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:19,735 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:19,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:19,741 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 21:42:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:19,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:19,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:19,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-22 21:42:19,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2018-11-22 21:42:19,889 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 21:42:19,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-22 21:42:19,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-22 21:42:19,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-22 21:42:19,890 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2018-11-22 21:42:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:19,925 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-11-22 21:42:19,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-22 21:42:19,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-22 21:42:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:19,926 INFO L225 Difference]: With dead ends: 45 [2018-11-22 21:42:19,927 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:42:19,927 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-22 21:42:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:42:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-22 21:42:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-22 21:42:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-11-22 21:42:19,931 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2018-11-22 21:42:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:19,931 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-11-22 21:42:19,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-22 21:42:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-11-22 21:42:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-22 21:42:19,932 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:19,932 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:19,932 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:19,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:19,933 INFO L82 PathProgramCache]: Analyzing trace with hash -977172149, now seen corresponding path program 2 times [2018-11-22 21:42:19,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:19,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:19,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:19,934 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:20,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:20,012 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 21:42:20,012 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-22 21:42:20,012 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 21:42:20,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:20,012 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:20,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-22 21:42:20,020 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-22 21:42:20,089 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-22 21:42:20,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:42:20,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:20,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:20,239 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-22 21:42:20,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2018-11-22 21:42:20,239 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 21:42:20,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-22 21:42:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-22 21:42:20,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-22 21:42:20,240 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 7 states. [2018-11-22 21:42:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:20,277 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-11-22 21:42:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-22 21:42:20,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-22 21:42:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:20,278 INFO L225 Difference]: With dead ends: 48 [2018-11-22 21:42:20,278 INFO L226 Difference]: Without dead ends: 35 [2018-11-22 21:42:20,279 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-22 21:42:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-22 21:42:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-22 21:42:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-22 21:42:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-22 21:42:20,283 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2018-11-22 21:42:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:20,284 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-22 21:42:20,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-22 21:42:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-22 21:42:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-22 21:42:20,284 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:20,284 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:20,285 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:20,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:20,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1040504430, now seen corresponding path program 3 times [2018-11-22 21:42:20,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:20,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:20,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:42:20,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:20,286 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:20,368 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:20,368 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 21:42:20,368 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-22 21:42:20,368 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 21:42:20,368 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:20,368 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:20,374 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-22 21:42:20,374 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-22 21:42:22,194 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-22 21:42:22,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:42:22,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:22,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:22,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-22 21:42:22,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2018-11-22 21:42:22,307 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-22 21:42:22,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 21:42:22,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 21:42:22,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-22 21:42:22,308 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 8 states. [2018-11-22 21:42:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:22,342 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-11-22 21:42:22,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-22 21:42:22,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-11-22 21:42:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:22,343 INFO L225 Difference]: With dead ends: 51 [2018-11-22 21:42:22,343 INFO L226 Difference]: Without dead ends: 38 [2018-11-22 21:42:22,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-11-22 21:42:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-22 21:42:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-22 21:42:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-22 21:42:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-11-22 21:42:22,347 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 27 [2018-11-22 21:42:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:22,347 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-11-22 21:42:22,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 21:42:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-11-22 21:42:22,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-22 21:42:22,348 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:22,348 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:22,348 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:22,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:22,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1576161899, now seen corresponding path program 4 times [2018-11-22 21:42:22,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:42:22,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:22,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-22 21:42:22,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:42:22,352 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:42:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-22 21:42:22,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:22,727 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 21:42:22,727 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-22 21:42:22,727 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-22 21:42:22,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:22,727 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:22,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:22,734 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 21:42:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:22,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:22,776 INFO L478 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 [2018-11-22 21:42:22,777 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,780 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-22 21:42:22,801 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,802 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,802 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-11-22 21:42:22,803 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,808 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:22,808 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:18 [2018-11-22 21:42:22,845 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,845 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,846 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,846 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2018-11-22 21:42:22,847 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,855 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:22,856 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:31 [2018-11-22 21:42:22,885 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 33 [2018-11-22 21:42:22,885 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,894 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:22,894 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:36 [2018-11-22 21:42:22,943 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,944 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,945 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,945 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,947 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:22,948 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2018-11-22 21:42:22,948 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,958 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,958 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:12 [2018-11-22 21:42:22,972 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2018-11-22 21:42:22,974 INFO L478 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 8 treesize of output 7 [2018-11-22 21:42:22,974 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,980 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2018-11-22 21:42:22,982 INFO L478 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 16 treesize of output 1 [2018-11-22 21:42:22,982 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,984 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,985 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,988 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:22,989 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:44, output treesize:12 [2018-11-22 21:42:23,007 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2018-11-22 21:42:23,010 INFO L478 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 16 treesize of output 1 [2018-11-22 21:42:23,010 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,015 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,024 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2018-11-22 21:42:23,034 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:23,035 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 22 treesize of output 14 [2018-11-22 21:42:23,036 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,038 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,041 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,041 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:50, output treesize:7 [2018-11-22 21:42:23,054 INFO L478 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 11 [2018-11-22 21:42:23,055 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-11-22 21:42:23,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,056 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,058 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,059 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2018-11-22 21:42:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:23,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:23,289 INFO L267 ElimStorePlain]: Start of recursive call 1: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:23,289 INFO L202 ElimStorePlain]: Needed 1 recursive calls to eliminate 13 variables, input treesize:123, output treesize:1 [2018-11-22 21:42:23,293 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:23,296 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:23,302 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:23,306 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:23,308 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:23,309 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:48, output treesize:22 [2018-11-22 21:42:25,661 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:25,665 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:42:25,670 INFO L478 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 0 case distinctions, treesize of input 74 treesize of output 52 [2018-11-22 21:42:25,672 INFO L478 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 9 treesize of output 8 [2018-11-22 21:42:25,672 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:25,688 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 59 [2018-11-22 21:42:25,691 INFO L478 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 45 treesize of output 44 [2018-11-22 21:42:25,692 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:25,739 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 52 [2018-11-22 21:42:25,741 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:25,786 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 61 [2018-11-22 21:42:25,809 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 75 [2018-11-22 21:42:25,810 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:25,879 INFO L478 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 49 treesize of output 48 [2018-11-22 21:42:25,879 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:25,947 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 40 [2018-11-22 21:42:25,959 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2018-11-22 21:42:25,959 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:25,969 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 8 treesize of output 1 [2018-11-22 21:42:25,969 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:25,976 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:42:26,033 INFO L478 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 49 treesize of output 45 [2018-11-22 21:42:26,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36 [2018-11-22 21:42:26,059 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:26,088 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-22 21:42:26,090 INFO L478 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 52 treesize of output 50 [2018-11-22 21:42:26,108 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 21:42:26,109 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2018-11-22 21:42:26,109 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,115 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,116 INFO L478 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 52 treesize of output 50 [2018-11-22 21:42:26,133 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2018-11-22 21:42:26,133 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,139 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,141 INFO L478 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 49 treesize of output 49 [2018-11-22 21:42:26,162 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-11-22 21:42:26,163 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,169 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,242 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-11-22 21:42:26,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2018-11-22 21:42:26,264 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 56 [2018-11-22 21:42:26,265 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:26,299 INFO L478 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 47 treesize of output 46 [2018-11-22 21:42:26,299 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,335 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2018-11-22 21:42:26,344 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-11-22 21:42:26,344 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,351 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 8 treesize of output 1 [2018-11-22 21:42:26,351 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,355 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,387 INFO L478 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 47 treesize of output 45 [2018-11-22 21:42:26,409 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 22 [2018-11-22 21:42:26,409 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:26,420 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:42:26,422 INFO L478 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 45 treesize of output 45 [2018-11-22 21:42:26,439 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:26,440 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-11-22 21:42:26,440 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,445 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,480 INFO L267 ElimStorePlain]: Start of recursive call 23: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-22 21:42:26,566 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 77 [2018-11-22 21:42:26,604 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 75 [2018-11-22 21:42:26,605 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:26,783 INFO L478 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 51 treesize of output 50 [2018-11-22 21:42:26,784 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:26,943 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 70 [2018-11-22 21:42:26,944 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 4 xjuncts. [2018-11-22 21:42:27,130 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 54 [2018-11-22 21:42:27,161 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 21 treesize of output 13 [2018-11-22 21:42:27,161 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:27,190 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 20 [2018-11-22 21:42:27,191 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:27,218 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 20 [2018-11-22 21:42:27,219 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:27,260 INFO L267 ElimStorePlain]: Start of recursive call 37: 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-22 21:42:27,427 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 46 [2018-11-22 21:42:27,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 66 [2018-11-22 21:42:27,577 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2018-11-22 21:42:27,587 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2018-11-22 21:42:27,588 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:27,655 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:42:27,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2018-11-22 21:42:27,662 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:27,718 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2018-11-22 21:42:27,718 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:27,770 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 29 [2018-11-22 21:42:27,770 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:27,840 INFO L683 Elim1Store]: detected equality via solver [2018-11-22 21:42:27,841 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 27 [2018-11-22 21:42:27,841 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:27,884 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2018-11-22 21:42:27,885 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:27,924 INFO L267 ElimStorePlain]: Start of recursive call 42: 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-22 21:42:27,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2018-11-22 21:42:27,965 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:28,013 INFO L267 ElimStorePlain]: Start of recursive call 41: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-22 21:42:28,192 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2018-11-22 21:42:28,200 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 8 treesize of output 1 [2018-11-22 21:42:28,201 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:28,207 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-11-22 21:42:28,208 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:28,212 INFO L267 ElimStorePlain]: Start of recursive call 50: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:42:28,364 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 59 [2018-11-22 21:42:28,501 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2018-11-22 21:42:28,515 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2018-11-22 21:42:28,516 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:28,631 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2018-11-22 21:42:28,632 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:28,771 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36 [2018-11-22 21:42:28,772 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 8 xjuncts. [2018-11-22 21:42:28,853 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 21 treesize of output 13 [2018-11-22 21:42:28,853 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:28,916 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 20 [2018-11-22 21:42:28,916 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:28,989 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2018-11-22 21:42:28,989 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 2 xjuncts. [2018-11-22 21:42:28,991 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 28 treesize of output 20 [2018-11-22 21:42:28,991 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-11-22 21:42:29,314 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:29,315 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: nested self-update not yet implemented: (store v_prenex_30 (+ dll_circular_create_~head~0.offset 8) v_DerPreprocessor_6) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacementForStoreCase(DerPreprocessor.java:248) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacement(DerPreprocessor.java:219) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacement(DerPreprocessor.java:210) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.convert(DerPreprocessor.java:191) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:253) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:211) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2018-11-22 21:42:29,319 INFO L168 Benchmark]: Toolchain (without parser) took 10820.92 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.4 MB). Free memory was 955.3 MB in the beginning and 1.2 GB in the end (delta: -222.5 MB). Peak memory consumption was 455.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:42:29,320 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:42:29,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:42:29,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.65 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. [2018-11-22 21:42:29,322 INFO L168 Benchmark]: Boogie Preprocessor took 19.67 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. [2018-11-22 21:42:29,322 INFO L168 Benchmark]: RCFGBuilder took 240.52 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. [2018-11-22 21:42:29,322 INFO L168 Benchmark]: TraceAbstraction took 10216.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 177.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.9 MB). Peak memory consumption was 454.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:42:29,326 INFO L336 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 955.3 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.65 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. * Boogie Preprocessor took 19.67 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 240.52 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10216.48 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 177.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.9 MB). Peak memory consumption was 454.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: nested self-update not yet implemented: (store v_prenex_30 (+ dll_circular_create_~head~0.offset 8) v_DerPreprocessor_6) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: nested self-update not yet implemented: (store v_prenex_30 (+ dll_circular_create_~head~0.offset 8) v_DerPreprocessor_6): de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.DerPreprocessor.constructReplacementForStoreCase(DerPreprocessor.java:248) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-22 21:42:30,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:42:30,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:42:30,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:42:30,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:42:30,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:42:30,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:42:30,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:42:30,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:42:30,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:42:30,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:42:30,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:42:30,755 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:42:30,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:42:30,756 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:42:30,757 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:42:30,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:42:30,759 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:42:30,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:42:30,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:42:30,762 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:42:30,763 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:42:30,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:42:30,765 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:42:30,765 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:42:30,766 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:42:30,767 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:42:30,767 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:42:30,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:42:30,769 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:42:30,769 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:42:30,769 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:42:30,769 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:42:30,770 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:42:30,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:42:30,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:42:30,772 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-22 21:42:30,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:42:30,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:42:30,783 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:42:30,783 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:42:30,784 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 21:42:30,784 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 21:42:30,784 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 21:42:30,784 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 21:42:30,784 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 21:42:30,784 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 21:42:30,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:42:30,785 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:42:30,785 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:42:30,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:42:30,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:42:30,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:42:30,786 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:42:30,787 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-22 21:42:30,787 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:42:30,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:42:30,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:42:30,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-22 21:42:30,789 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:42:30,790 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-22 21:42:30,790 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-22 21:42:30,790 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 -> 94522ad0a42fd7eae1597f2a0d5f88526d7c71c8 [2018-11-22 21:42:30,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:42:30,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:42:30,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:42:30,833 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:42:30,833 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:42:30,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:30,877 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/7414892e8/ae85fe7944f3448788dbaceadfc4b630/FLAG08d48a14d [2018-11-22 21:42:31,250 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:42:31,251 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:31,259 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/7414892e8/ae85fe7944f3448788dbaceadfc4b630/FLAG08d48a14d [2018-11-22 21:42:31,645 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/data/7414892e8/ae85fe7944f3448788dbaceadfc4b630 [2018-11-22 21:42:31,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:42:31,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:42:31,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:42:31,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:42:31,651 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:42:31,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:31,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb9a1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31, skipping insertion in model container [2018-11-22 21:42:31,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:31,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:42:31,689 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:42:31,903 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:42:31,914 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:42:31,950 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:42:31,986 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:42:31,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31 WrapperNode [2018-11-22 21:42:31,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:42:31,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:42:31,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:42:31,987 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:42:32,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:42:32,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:42:32,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:42:32,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:42:32,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... [2018-11-22 21:42:32,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:42:32,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:42:32,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:42:32,073 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:42:32,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/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 [2018-11-22 21:42:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2018-11-22 21:42:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2018-11-22 21:42:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 21:42:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-22 21:42:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-22 21:42:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-22 21:42:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:42:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:42:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:42:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:42:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 21:42:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 21:42:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 21:42:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-22 21:42:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:42:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:42:32,428 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:42:32,429 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-11-22 21:42:32,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:42:32 BoogieIcfgContainer [2018-11-22 21:42:32,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:42:32,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:42:32,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:42:32,432 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:42:32,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:42:31" (1/3) ... [2018-11-22 21:42:32,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1946d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:42:32, skipping insertion in model container [2018-11-22 21:42:32,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:42:31" (2/3) ... [2018-11-22 21:42:32,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1946d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:42:32, skipping insertion in model container [2018-11-22 21:42:32,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:42:32" (3/3) ... [2018-11-22 21:42:32,434 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal_true-unreach-call_true-valid-memsafety.i [2018-11-22 21:42:32,442 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:42:32,448 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:42:32,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:42:32,475 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 21:42:32,475 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:42:32,476 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:42:32,476 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:42:32,476 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:42:32,476 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:42:32,476 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:42:32,476 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:42:32,476 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:42:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-22 21:42:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:42:32,488 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:32,488 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:32,490 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:32,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:32,493 INFO L82 PathProgramCache]: Analyzing trace with hash 168395423, now seen corresponding path program 1 times [2018-11-22 21:42:32,495 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 21:42:32,496 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 21:42:32,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:32,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:32,581 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-22 21:42:32,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:42:32,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 21:42:32,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 21:42:32,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 21:42:32,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:42:32,595 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-11-22 21:42:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:32,608 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-11-22 21:42:32,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 21:42:32,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-22 21:42:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:32,616 INFO L225 Difference]: With dead ends: 53 [2018-11-22 21:42:32,616 INFO L226 Difference]: Without dead ends: 26 [2018-11-22 21:42:32,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 21:42:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-22 21:42:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-22 21:42:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-22 21:42:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-22 21:42:32,645 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2018-11-22 21:42:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:32,645 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-22 21:42:32,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 21:42:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-22 21:42:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 21:42:32,646 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:32,646 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:32,646 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:32,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash 729507883, now seen corresponding path program 1 times [2018-11-22 21:42:32,647 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 21:42:32,647 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 21:42:32,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:32,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:32,747 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (3)] Exception during sending of exit command (exit): Broken pipe [2018-11-22 21:42:32,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:42:32,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-22 21:42:32,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 21:42:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 21:42:32,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:42:32,752 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-22 21:42:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:33,165 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-11-22 21:42:33,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 21:42:33,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-22 21:42:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:33,166 INFO L225 Difference]: With dead ends: 42 [2018-11-22 21:42:33,166 INFO L226 Difference]: Without dead ends: 29 [2018-11-22 21:42:33,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 21:42:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-22 21:42:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-22 21:42:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-22 21:42:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-11-22 21:42:33,170 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2018-11-22 21:42:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:33,170 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-22 21:42:33,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 21:42:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-11-22 21:42:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-22 21:42:33,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:33,171 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:33,171 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:33,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:33,172 INFO L82 PathProgramCache]: Analyzing trace with hash 922487694, now seen corresponding path program 1 times [2018-11-22 21:42:33,172 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 21:42:33,172 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 21:42:33,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:33,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:33,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:33,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:33,439 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:33,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:42:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:42:33,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:33,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:33,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-22 21:42:33,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7] total 16 [2018-11-22 21:42:33,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-22 21:42:33,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-22 21:42:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-22 21:42:33,800 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 16 states. [2018-11-22 21:42:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:35,787 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-11-22 21:42:35,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-22 21:42:35,789 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2018-11-22 21:42:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:35,789 INFO L225 Difference]: With dead ends: 45 [2018-11-22 21:42:35,789 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 21:42:35,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-11-22 21:42:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 21:42:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-22 21:42:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-22 21:42:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-11-22 21:42:35,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2018-11-22 21:42:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:35,795 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-11-22 21:42:35,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-22 21:42:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-11-22 21:42:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-22 21:42:35,795 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:35,796 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:35,796 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:35,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -977172149, now seen corresponding path program 2 times [2018-11-22 21:42:35,796 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 21:42:35,796 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 21:42:35,808 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-22 21:42:35,884 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 21:42:35,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:42:35,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:35,938 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:36,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:36,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:36,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 21:42:37,273 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-22 21:42:37,273 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:42:37,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:37,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:37,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-22 21:42:37,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 8] total 19 [2018-11-22 21:42:37,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-22 21:42:37,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-22 21:42:37,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-11-22 21:42:37,705 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 19 states. [2018-11-22 21:42:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:42:40,070 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2018-11-22 21:42:40,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-22 21:42:40,072 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 24 [2018-11-22 21:42:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:42:40,072 INFO L225 Difference]: With dead ends: 48 [2018-11-22 21:42:40,073 INFO L226 Difference]: Without dead ends: 35 [2018-11-22 21:42:40,073 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2018-11-22 21:42:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-22 21:42:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-22 21:42:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-22 21:42:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-22 21:42:40,077 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2018-11-22 21:42:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:42:40,078 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-22 21:42:40,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-22 21:42:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-22 21:42:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-22 21:42:40,079 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:42:40,079 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:42:40,079 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:42:40,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:42:40,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1040504430, now seen corresponding path program 3 times [2018-11-22 21:42:40,079 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-22 21:42:40,079 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-22 21:42:40,091 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-22 21:42:40,299 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-22 21:42:40,299 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:42:40,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:42:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:40,392 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:42:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:42:40,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:42:40,759 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 21:42:40,776 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-22 21:43:01,327 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-22 21:43:01,327 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 21:43:01,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 21:43:01,509 INFO L478 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 0 case distinctions, treesize of input 31 treesize of output 24 [2018-11-22 21:43:01,512 INFO L478 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 8 treesize of output 7 [2018-11-22 21:43:01,513 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:01,553 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 35 [2018-11-22 21:43:01,558 INFO L478 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 24 treesize of output 12 [2018-11-22 21:43:01,559 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:01,594 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:01,596 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:01,602 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:01,603 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:38, output treesize:14 [2018-11-22 21:43:01,656 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:01,672 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:01,771 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 50 [2018-11-22 21:43:01,777 INFO L478 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 39 treesize of output 38 [2018-11-22 21:43:01,777 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,218 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,225 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 36 treesize of output 41 [2018-11-22 21:43:02,225 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,629 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 37 treesize of output 30 [2018-11-22 21:43:02,634 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,635 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,636 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,642 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2018-11-22 21:43:02,643 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,653 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,853 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2018-11-22 21:43:02,858 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,859 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,861 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,866 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 35 [2018-11-22 21:43:02,867 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,916 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:02,992 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44 [2018-11-22 21:43:02,997 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,998 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:02,999 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:03,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2018-11-22 21:43:03,006 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,047 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 21:43:03,049 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 29 treesize of output 21 [2018-11-22 21:43:03,050 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,061 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,076 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:43:03,093 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-22 21:43:03,094 INFO L202 ElimStorePlain]: Needed 13 recursive calls to eliminate 3 variables, input treesize:45, output treesize:23 [2018-11-22 21:43:03,281 INFO L478 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 15 treesize of output 19 [2018-11-22 21:43:03,284 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 10 [2018-11-22 21:43:03,285 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,298 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 11 treesize of output 3 [2018-11-22 21:43:03,298 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,307 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 10 treesize of output 4 [2018-11-22 21:43:03,307 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,311 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:43:03,315 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:03,315 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2018-11-22 21:43:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 21:43:03,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 21:43:03,764 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2018-11-22 21:43:03,994 WARN L180 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-22 21:43:04,285 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-22 21:43:04,625 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-22 21:43:04,706 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:04,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:04,727 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:04,733 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:04,737 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-22 21:43:04,737 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:48, output treesize:22 [2018-11-22 21:43:04,884 INFO L478 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 0 case distinctions, treesize of input 36 treesize of output 30 [2018-11-22 21:43:04,892 INFO L478 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 9 treesize of output 8 [2018-11-22 21:43:04,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,001 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 43 [2018-11-22 21:43:05,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 20 [2018-11-22 21:43:05,058 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,157 INFO L478 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 26 treesize of output 8 [2018-11-22 21:43:05,157 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,184 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,201 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,234 INFO L478 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 0 case distinctions, treesize of input 33 treesize of output 34 [2018-11-22 21:43:05,238 INFO L478 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 11 treesize of output 10 [2018-11-22 21:43:05,238 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,272 INFO L478 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 23 treesize of output 27 [2018-11-22 21:43:05,306 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-11-22 21:43:05,306 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,328 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 3 [2018-11-22 21:43:05,329 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,356 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 16 [2018-11-22 21:43:05,356 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,366 INFO L267 ElimStorePlain]: Start of recursive call 9: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-22 21:43:05,384 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-22 21:43:05,428 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 49 [2018-11-22 21:43:05,434 INFO L478 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 35 treesize of output 34 [2018-11-22 21:43:05,435 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,518 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 42 [2018-11-22 21:43:05,519 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,596 INFO L478 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 35 treesize of output 29 [2018-11-22 21:43:05,624 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2018-11-22 21:43:05,624 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,643 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,646 INFO L478 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 33 treesize of output 29 [2018-11-22 21:43:05,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-11-22 21:43:05,661 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,671 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,747 INFO L478 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 34 treesize of output 34 [2018-11-22 21:43:05,774 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 7 [2018-11-22 21:43:05,774 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-22 21:43:05,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2018-11-22 21:43:05,806 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-11-22 21:43:05,826 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-22 21:43:05,882 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-22 21:43:05,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-11-22 21:43:05,973 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 7 variables, input treesize:59, output treesize:39 [2018-11-22 21:43:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-22 21:43:06,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-22 21:43:06,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 11] total 32 [2018-11-22 21:43:06,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-22 21:43:06,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-22 21:43:06,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2018-11-22 21:43:06,307 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 32 states. [2018-11-22 21:43:13,109 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-11-22 21:43:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:43:13,579 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-11-22 21:43:13,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-22 21:43:13,579 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 27 [2018-11-22 21:43:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:43:13,580 INFO L225 Difference]: With dead ends: 52 [2018-11-22 21:43:13,580 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 21:43:13,581 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=344, Invalid=2008, Unknown=0, NotChecked=0, Total=2352 [2018-11-22 21:43:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 21:43:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 21:43:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 21:43:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:43:13,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-22 21:43:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:43:13,581 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:43:13,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-22 21:43:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:43:13,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 21:43:13,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 21:43:13,679 INFO L448 ceAbstractionStarter]: For program point exitEXIT(lines 561 563) no Hoare annotation was computed. [2018-11-22 21:43:13,679 INFO L451 ceAbstractionStarter]: At program point exitENTRY(lines 561 563) the Hoare annotation is: true [2018-11-22 21:43:13,679 INFO L448 ceAbstractionStarter]: For program point exitFINAL(lines 561 563) no Hoare annotation was computed. [2018-11-22 21:43:13,679 INFO L451 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2018-11-22 21:43:13,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:43:13,679 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 21:43:13,680 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L607(lines 607 609) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L605-1(lines 605 613) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L444 ceAbstractionStarter]: At program point L605-3(lines 605 613) the Hoare annotation is: (= (bvadd main_~len~0 (_ bv4294967291 32)) (_ bv0 32)) [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 615) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L605-4(lines 605 613) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 588 617) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L595(lines 595 597) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L444 ceAbstractionStarter]: At program point L591(line 591) the Hoare annotation is: (= (bvadd main_~len~0 (_ bv4294967291 32)) (_ bv0 32)) [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L591-1(line 591) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 588 617) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L444 ceAbstractionStarter]: At program point L608(lines 588 617) the Hoare annotation is: (= (bvadd main_~len~0 (_ bv4294967291 32)) (_ bv0 32)) [2018-11-22 21:43:13,680 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 588 617) the Hoare annotation is: true [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L594-1(lines 594 601) no Hoare annotation was computed. [2018-11-22 21:43:13,680 INFO L444 ceAbstractionStarter]: At program point L594-3(lines 594 601) the Hoare annotation is: (= (bvadd main_~len~0 (_ bv4294967291 32)) (_ bv0 32)) [2018-11-22 21:43:13,680 INFO L448 ceAbstractionStarter]: For program point L594-4(lines 594 601) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L451 ceAbstractionStarter]: At program point L576(line 576) the Hoare annotation is: true [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point dll_circular_createEXIT(lines 564 587) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point L566(lines 566 568) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point L575(lines 575 577) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point L575-1(lines 575 577) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L444 ceAbstractionStarter]: At program point L573-2(lines 573 583) the Hoare annotation is: (let ((.cse0 (= |dll_circular_create_#in~data| dll_circular_create_~data)) (.cse1 (= (_ bv0 32) dll_circular_create_~last~0.offset)) (.cse2 (= (_ bv0 32) dll_circular_create_~head~0.offset)) (.cse3 (= (select (select |#memory_int| dll_circular_create_~head~0.base) dll_circular_create_~head~0.offset) |dll_circular_create_#in~data|))) (or (and .cse0 .cse1 .cse2 (= |dll_circular_create_#in~len| dll_circular_create_~len) .cse3) (and .cse0 .cse1 .cse2 (= (_ bv0 32) dll_circular_create_~new_head~0.offset) .cse3))) [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point L573-3(lines 573 583) no Hoare annotation was computed. [2018-11-22 21:43:13,681 INFO L451 ceAbstractionStarter]: At program point L567(line 567) the Hoare annotation is: true [2018-11-22 21:43:13,681 INFO L448 ceAbstractionStarter]: For program point dll_circular_createFINAL(lines 564 587) no Hoare annotation was computed. [2018-11-22 21:43:13,682 INFO L451 ceAbstractionStarter]: At program point dll_circular_createENTRY(lines 564 587) the Hoare annotation is: true [2018-11-22 21:43:13,690 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,690 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,691 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,691 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:43:13 BoogieIcfgContainer [2018-11-22 21:43:13,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:43:13,693 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:43:13,693 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:43:13,693 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:43:13,694 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:42:32" (3/4) ... [2018-11-22 21:43:13,696 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 21:43:13,700 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure exit [2018-11-22 21:43:13,700 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 21:43:13,700 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 21:43:13,700 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure dll_circular_create [2018-11-22 21:43:13,703 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-22 21:43:13,703 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-22 21:43:13,704 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 21:43:13,721 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\old(data) == data && 0bv32 == last) && 0bv32 == head) && \old(len) == len) && unknown-#memory_int-unknown[head][head] == \old(data)) || ((((\old(data) == data && 0bv32 == last) && 0bv32 == head) && 0bv32 == new_head) && unknown-#memory_int-unknown[head][head] == \old(data)) [2018-11-22 21:43:13,735 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_18daa84c-4fbe-4cb2-a0f4-be160125ed2f/bin-2019/utaipan/witness.graphml [2018-11-22 21:43:13,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:43:13,736 INFO L168 Benchmark]: Toolchain (without parser) took 42088.54 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 256.9 MB). Free memory was 938.5 MB in the beginning and 1.2 GB in the end (delta: -267.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:43:13,736 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:43:13,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.34 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 911.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-22 21:43:13,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 911.6 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-22 21:43:13,737 INFO L168 Benchmark]: Boogie Preprocessor took 26.19 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. [2018-11-22 21:43:13,738 INFO L168 Benchmark]: RCFGBuilder took 356.89 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2018-11-22 21:43:13,739 INFO L168 Benchmark]: TraceAbstraction took 41263.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-22 21:43:13,740 INFO L168 Benchmark]: Witness Printer took 42.33 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 21:43:13,741 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 338.34 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 911.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 911.6 MB in the beginning and 1.1 GB in the end (delta: -205.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.19 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 356.89 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 41263.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -113.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Witness Printer took 42.33 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 615]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: ~bvadd64(len, 4294967291bv32) == 0bv32 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: ~bvadd64(len, 4294967291bv32) == 0bv32 - InvariantResult [Line: 573]: Loop Invariant [2018-11-22 21:43:13,744 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,744 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,745 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-22 21:43:13,745 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((\old(data) == data && 0bv32 == last) && 0bv32 == head) && \old(len) == len) && unknown-#memory_int-unknown[head][head] == \old(data)) || ((((\old(data) == data && 0bv32 == last) && 0bv32 == head) && 0bv32 == new_head) && unknown-#memory_int-unknown[head][head] == \old(data)) - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 594]: Loop Invariant Derived loop invariant: ~bvadd64(len, 4294967291bv32) == 0bv32 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. SAFE Result, 41.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 12.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 182 SDslu, 750 SDs, 0 SdLazy, 567 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 249 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 16 PreInvPairs, 24 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 115 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 22.0s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 310 ConstructedInterpolants, 6 QuantifiedInterpolants, 43456 SizeOfPredicates, 33 NumberOfNonLiveVariables, 808 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 14/72 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...