./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Ackermann01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann01-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2f1e635c5c806286d01eb0b8ff07448b8253a7a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:56,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:56,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:56,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:56,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:56,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:56,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:56,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:56,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:56,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:56,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:56,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:56,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:56,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:56,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:56,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:56,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:56,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:56,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:56,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:56,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:56,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:56,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:56,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:56,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:56,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:56,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:56,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:56,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:56,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:56,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:56,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:56,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:56,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:56,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:56,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:56,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:56,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:56,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:56,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:56,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:56,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-10-22 11:26:56,899 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:56,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:56,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:56,900 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:56,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:56,901 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:56,902 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:56,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:56,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:56,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:26:56,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:26:56,904 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:56,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:56,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:56,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:56,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:56,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:56,907 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:56,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:56,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:56,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:56,907 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) 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 -> c2f1e635c5c806286d01eb0b8ff07448b8253a7a [2019-10-22 11:26:56,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:56,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:56,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:56,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:56,954 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:56,955 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/../../sv-benchmarks/c/recursive/Ackermann01-2.c [2019-10-22 11:26:57,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/data/43a30709a/34e18934514b4af7ac1673da177a6475/FLAG226b82dad [2019-10-22 11:26:57,422 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:57,423 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/sv-benchmarks/c/recursive/Ackermann01-2.c [2019-10-22 11:26:57,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/data/43a30709a/34e18934514b4af7ac1673da177a6475/FLAG226b82dad [2019-10-22 11:26:57,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/data/43a30709a/34e18934514b4af7ac1673da177a6475 [2019-10-22 11:26:57,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:57,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:57,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:57,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:57,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:57,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1288fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57, skipping insertion in model container [2019-10-22 11:26:57,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,464 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:57,479 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:57,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:57,611 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:57,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:57,695 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:57,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57 WrapperNode [2019-10-22 11:26:57,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:57,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:57,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:57,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:57,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:57,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:57,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:57,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:57,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... [2019-10-22 11:26:57,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:57,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:57,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:57,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:57,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2019-10-22 11:26:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2019-10-22 11:26:58,050 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:58,050 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:58,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:58 BoogieIcfgContainer [2019-10-22 11:26:58,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:58,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:58,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:58,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:58,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:57" (1/3) ... [2019-10-22 11:26:58,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d4e0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:58, skipping insertion in model container [2019-10-22 11:26:58,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:57" (2/3) ... [2019-10-22 11:26:58,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d4e0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:58, skipping insertion in model container [2019-10-22 11:26:58,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:58" (3/3) ... [2019-10-22 11:26:58,058 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2019-10-22 11:26:58,066 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:58,073 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 11:26:58,085 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 11:26:58,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:58,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:58,108 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:58,108 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:58,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:58,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:58,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:58,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-22 11:26:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:26:58,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:58,130 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:58,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:58,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1481027418, now seen corresponding path program 1 times [2019-10-22 11:26:58,146 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:58,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499194661] [2019-10-22 11:26:58,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:58,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499194661] [2019-10-22 11:26:58,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:58,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:58,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727911251] [2019-10-22 11:26:58,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:58,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:58,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:58,305 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 5 states. [2019-10-22 11:26:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:58,452 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2019-10-22 11:26:58,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:58,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 11:26:58,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:58,463 INFO L225 Difference]: With dead ends: 72 [2019-10-22 11:26:58,465 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 11:26:58,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 11:26:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2019-10-22 11:26:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 11:26:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2019-10-22 11:26:58,512 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 7 [2019-10-22 11:26:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:58,513 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2019-10-22 11:26:58,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2019-10-22 11:26:58,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:26:58,513 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:58,514 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:58,515 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:58,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1332795356, now seen corresponding path program 1 times [2019-10-22 11:26:58,515 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:58,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497152147] [2019-10-22 11:26:58,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:58,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497152147] [2019-10-22 11:26:58,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:58,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:58,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499304070] [2019-10-22 11:26:58,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:58,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:58,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:58,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:58,559 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 5 states. [2019-10-22 11:26:58,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:58,611 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2019-10-22 11:26:58,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:58,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:26:58,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:58,612 INFO L225 Difference]: With dead ends: 50 [2019-10-22 11:26:58,612 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 11:26:58,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 11:26:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-22 11:26:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 11:26:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2019-10-22 11:26:58,628 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 8 [2019-10-22 11:26:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:58,628 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2019-10-22 11:26:58,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2019-10-22 11:26:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:26:58,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:58,629 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:58,629 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:58,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1332790359, now seen corresponding path program 1 times [2019-10-22 11:26:58,630 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:58,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867013496] [2019-10-22 11:26:58,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:58,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867013496] [2019-10-22 11:26:58,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:58,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:58,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061568826] [2019-10-22 11:26:58,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:58,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:58,719 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 5 states. [2019-10-22 11:26:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:58,790 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2019-10-22 11:26:58,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:58,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:26:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:58,792 INFO L225 Difference]: With dead ends: 75 [2019-10-22 11:26:58,792 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 11:26:58,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 11:26:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2019-10-22 11:26:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 11:26:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2019-10-22 11:26:58,806 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 8 [2019-10-22 11:26:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:58,806 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2019-10-22 11:26:58,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2019-10-22 11:26:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:58,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:58,807 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:58,808 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1633016855, now seen corresponding path program 1 times [2019-10-22 11:26:58,808 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:58,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790977053] [2019-10-22 11:26:58,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:58,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790977053] [2019-10-22 11:26:58,839 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:58,839 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:58,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117103658] [2019-10-22 11:26:58,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:58,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:58,840 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 5 states. [2019-10-22 11:26:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:58,919 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2019-10-22 11:26:58,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:58,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:26:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:58,921 INFO L225 Difference]: With dead ends: 115 [2019-10-22 11:26:58,921 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:26:58,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:26:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2019-10-22 11:26:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-22 11:26:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2019-10-22 11:26:58,939 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 9 [2019-10-22 11:26:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:58,939 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2019-10-22 11:26:58,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2019-10-22 11:26:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:58,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:58,940 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:58,940 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1341101972, now seen corresponding path program 1 times [2019-10-22 11:26:58,941 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:58,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335982057] [2019-10-22 11:26:58,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,941 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:58,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:58,983 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335982057] [2019-10-22 11:26:58,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:58,984 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:58,984 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418348334] [2019-10-22 11:26:58,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:58,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:58,985 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand 4 states. [2019-10-22 11:26:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,079 INFO L93 Difference]: Finished difference Result 167 states and 220 transitions. [2019-10-22 11:26:59,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:59,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-22 11:26:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,083 INFO L225 Difference]: With dead ends: 167 [2019-10-22 11:26:59,083 INFO L226 Difference]: Without dead ends: 96 [2019-10-22 11:26:59,085 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-10-22 11:26:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-10-22 11:26:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-10-22 11:26:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2019-10-22 11:26:59,105 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 15 [2019-10-22 11:26:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,105 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2019-10-22 11:26:59,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2019-10-22 11:26:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:59,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,106 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1341095021, now seen corresponding path program 1 times [2019-10-22 11:26:59,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366204242] [2019-10-22 11:26:59,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:59,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366204242] [2019-10-22 11:26:59,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16828683] [2019-10-22 11:26:59,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b5f5ff99-68b2-420f-a74a-572ea4f9ce31/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:59,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:59,217 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:59,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [925361255] [2019-10-22 11:26:59,279 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-22 11:26:59,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:59,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:59,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:59,570 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:26:59,574 INFO L168 Benchmark]: Toolchain (without parser) took 2126.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 949.9 MB in the beginning and 1.0 GB in the end (delta: -51.2 MB). Peak memory consumption was 104.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:59,575 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:59,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:59,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:59,576 INFO L168 Benchmark]: Boogie Preprocessor took 16.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:59,576 INFO L168 Benchmark]: RCFGBuilder took 310.45 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:59,577 INFO L168 Benchmark]: TraceAbstraction took 1520.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:59,579 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -197.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.08 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 16.01 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 310.45 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1520.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...