./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.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_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/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 edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/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 11:26:57,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:57,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:57,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:57,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:57,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:57,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:57,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:57,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:57,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:57,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:57,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:57,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:57,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:57,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:57,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:57,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:57,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:57,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:57,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:57,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:57,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:57,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:57,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:57,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:57,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:57,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:57,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:57,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:57,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:57,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:57,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:57,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:57,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:57,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:57,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:57,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:57,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:57,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:57,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:57,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:57,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-10-22 11:26:57,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:57,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:57,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:57,781 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:57,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:57,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:57,783 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:57,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:57,783 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:57,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:57,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:57,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:57,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:57,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:57,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:57,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:57,789 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_b129bff0-b7f3-4c71-b63d-05616b6d17fb/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 -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2019-10-22 11:26:57,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:57,841 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:57,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:57,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:57,847 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:57,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2019-10-22 11:26:57,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/data/526a3437f/1a0e8be215b34be9a36b26996e1aa428/FLAGcdfc8265f [2019-10-22 11:26:58,267 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:58,268 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/sv-benchmarks/c/recursive/McCarthy91-2.c [2019-10-22 11:26:58,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/data/526a3437f/1a0e8be215b34be9a36b26996e1aa428/FLAGcdfc8265f [2019-10-22 11:26:58,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/bin/utaipan/data/526a3437f/1a0e8be215b34be9a36b26996e1aa428 [2019-10-22 11:26:58,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:58,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:58,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:58,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:58,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:58,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587b9e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58, skipping insertion in model container [2019-10-22 11:26:58,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,311 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:58,328 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:58,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:58,468 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:58,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:58,553 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:58,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58 WrapperNode [2019-10-22 11:26:58,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:58,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:58,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:58,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:58,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:58,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:58,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:58,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:58,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... [2019-10-22 11:26:58,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:58,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:58,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:58,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:58,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/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 11:26:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-10-22 11:26:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-10-22 11:26:58,869 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:58,869 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:58,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:58 BoogieIcfgContainer [2019-10-22 11:26:58,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:58,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:58,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:58,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:58,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:58" (1/3) ... [2019-10-22 11:26:58,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37780ffc 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 11:26:58,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:58" (2/3) ... [2019-10-22 11:26:58,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37780ffc 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 11:26:58,889 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 11:26:58,891 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2019-10-22 11:26:58,905 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:58,931 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:26:58,942 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:26:58,990 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:59,003 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:59,003 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:59,003 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:59,003 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:59,003 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:59,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:59,004 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-22 11:26:59,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:26:59,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,033 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:26:59,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,040 INFO L82 PathProgramCache]: Analyzing trace with hash 31043311, now seen corresponding path program 1 times [2019-10-22 11:26:59,048 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165235172] [2019-10-22 11:26:59,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,246 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 11:26:59,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165235172] [2019-10-22 11:26:59,247 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:59,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650540771] [2019-10-22 11:26:59,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:59,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:59,265 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-10-22 11:26:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,391 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-22 11:26:59,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:59,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 11:26:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,405 INFO L225 Difference]: With dead ends: 52 [2019-10-22 11:26:59,405 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:26:59,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 11:26:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:26:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-10-22 11:26:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 11:26:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-10-22 11:26:59,460 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2019-10-22 11:26:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,460 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-10-22 11:26:59,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-10-22 11:26:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:26:59,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,461 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:26:59,462 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,462 INFO L82 PathProgramCache]: Analyzing trace with hash 31043471, now seen corresponding path program 1 times [2019-10-22 11:26:59,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359416971] [2019-10-22 11:26:59,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,479 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 11:26:59,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359416971] [2019-10-22 11:26:59,480 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,480 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:59,480 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124949603] [2019-10-22 11:26:59,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:59,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:59,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:59,484 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2019-10-22 11:26:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,516 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-22 11:26:59,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:59,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:26:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,519 INFO L225 Difference]: With dead ends: 40 [2019-10-22 11:26:59,520 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 11:26:59,520 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:59,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 11:26:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-10-22 11:26:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 11:26:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-22 11:26:59,529 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2019-10-22 11:26:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,530 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-22 11:26:59,530 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-10-22 11:26:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:59,530 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,530 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,533 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,533 INFO L82 PathProgramCache]: Analyzing trace with hash 962342709, now seen corresponding path program 1 times [2019-10-22 11:26:59,533 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886192032] [2019-10-22 11:26:59,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,560 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 11:26:59,560 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886192032] [2019-10-22 11:26:59,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:59,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049985866] [2019-10-22 11:26:59,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:59,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:59,562 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-10-22 11:26:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,579 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-10-22 11:26:59,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:59,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:26:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,581 INFO L225 Difference]: With dead ends: 39 [2019-10-22 11:26:59,581 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 11:26:59,582 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 11:26:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-22 11:26:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:26:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-22 11:26:59,589 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2019-10-22 11:26:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,589 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-22 11:26:59,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-22 11:26:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:59,590 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,590 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,591 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash 962347674, now seen corresponding path program 1 times [2019-10-22 11:26:59,591 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080953614] [2019-10-22 11:26:59,592 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,592 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,623 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 11:26:59,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080953614] [2019-10-22 11:26:59,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:59,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569667718] [2019-10-22 11:26:59,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:59,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:59,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:59,625 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-10-22 11:26:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,706 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-10-22 11:26:59,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:59,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 11:26:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,708 INFO L225 Difference]: With dead ends: 50 [2019-10-22 11:26:59,708 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 11:26:59,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 11:26:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 11:26:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-10-22 11:26:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 11:26:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-10-22 11:26:59,720 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2019-10-22 11:26:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,720 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-10-22 11:26:59,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:59,721 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-10-22 11:26:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 11:26:59,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,721 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,722 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash -703912792, now seen corresponding path program 1 times [2019-10-22 11:26:59,722 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45621213] [2019-10-22 11:26:59,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:59,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45621213] [2019-10-22 11:26:59,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,758 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:59,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340215024] [2019-10-22 11:26:59,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:59,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:59,760 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2019-10-22 11:26:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,845 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-22 11:26:59,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:59,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 11:26:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,848 INFO L225 Difference]: With dead ends: 68 [2019-10-22 11:26:59,848 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 11:26:59,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 11:26:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-10-22 11:26:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 11:26:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-10-22 11:26:59,866 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2019-10-22 11:26:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,866 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-10-22 11:26:59,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-10-22 11:26:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:26:59,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,867 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,868 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1217128367, now seen corresponding path program 1 times [2019-10-22 11:26:59,869 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526525531] [2019-10-22 11:26:59,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,900 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 11:26:59,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526525531] [2019-10-22 11:26:59,901 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:59,901 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:59,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675704139] [2019-10-22 11:26:59,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:59,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:59,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:59,902 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2019-10-22 11:26:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:59,915 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-10-22 11:26:59,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:59,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 11:26:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:59,917 INFO L225 Difference]: With dead ends: 58 [2019-10-22 11:26:59,917 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 11:26:59,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 11:26:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 11:26:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 11:26:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-10-22 11:26:59,927 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2019-10-22 11:26:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:59,927 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-10-22 11:26:59,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-10-22 11:26:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:26:59,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:59,928 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:59,928 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 11:26:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -843390153, now seen corresponding path program 1 times [2019-10-22 11:26:59,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:59,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910305898] [2019-10-22 11:26:59,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,929 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:59,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:59,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910305898] [2019-10-22 11:26:59,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047865699] [2019-10-22 11:26:59,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b129bff0-b7f3-4c71-b63d-05616b6d17fb/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 11:27:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:00,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 11:27:00,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:00,160 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:00,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [167150583] [2019-10-22 11:27:00,371 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 19 [2019-10-22 11:27:00,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:27:00,419 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:27:00,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:27:00,719 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 11:27:00,725 INFO L168 Benchmark]: Toolchain (without parser) took 2433.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.4 MB in the beginning and 967.3 MB in the end (delta: -22.9 MB). Peak memory consumption was 107.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:00,725 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:27:00,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:00,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.67 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. [2019-10-22 11:27:00,727 INFO L168 Benchmark]: Boogie Preprocessor took 21.06 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 11:27:00,728 INFO L168 Benchmark]: RCFGBuilder took 272.02 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:00,728 INFO L168 Benchmark]: TraceAbstraction took 1843.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.3 MB in the end (delta: 141.1 MB). Peak memory consumption was 141.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:00,731 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.67 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. * Boogie Preprocessor took 21.06 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 272.02 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1843.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.3 MB in the end (delta: 141.1 MB). Peak memory consumption was 141.1 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...