./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector-regression/signextension2_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-regression/signextension2_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4720d49a1188bad2d134c8dd08313372db11fb .............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:29:21,023 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:29:21,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:29:21,039 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:29:21,040 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:29:21,041 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:29:21,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:29:21,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:29:21,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:29:21,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:29:21,053 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:29:21,053 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:29:21,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:29:21,057 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:29:21,065 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:29:21,065 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:29:21,066 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:29:21,067 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:29:21,069 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:29:21,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:29:21,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:29:21,075 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:29:21,077 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:29:21,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:29:21,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:29:21,081 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:29:21,082 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:29:21,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:29:21,086 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:29:21,087 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:29:21,089 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:29:21,090 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:29:21,091 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:29:21,092 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:29:21,093 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:29:21,094 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:29:21,095 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:29:21,106 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:29:21,107 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:29:21,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:29:21,108 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:29:21,108 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:29:21,108 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:29:21,108 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:29:21,108 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:29:21,108 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:29:21,109 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:29:21,109 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:29:21,109 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:29:21,109 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:29:21,110 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:29:21,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:29:21,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:29:21,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:29:21,112 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:29:21,113 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4720d49a1188bad2d134c8dd08313372db11fb [2018-10-26 22:29:21,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:29:21,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:29:21,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:29:21,180 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:29:21,180 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:29:21,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/../../sv-benchmarks/c/bitvector-regression/signextension2_true-unreach-call_true-termination.c [2018-10-26 22:29:21,236 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/data/2954847b6/33427b4bbde247c0b0c6f202319bfcba/FLAG599cb3bae [2018-10-26 22:29:21,592 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:29:21,593 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/sv-benchmarks/c/bitvector-regression/signextension2_true-unreach-call_true-termination.c [2018-10-26 22:29:21,599 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/data/2954847b6/33427b4bbde247c0b0c6f202319bfcba/FLAG599cb3bae [2018-10-26 22:29:21,611 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/data/2954847b6/33427b4bbde247c0b0c6f202319bfcba [2018-10-26 22:29:21,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:29:21,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:29:21,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:21,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:29:21,620 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:29:21,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21, skipping insertion in model container [2018-10-26 22:29:21,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:29:21,652 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:29:21,765 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:21,769 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:29:21,780 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:29:21,789 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:29:21,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21 WrapperNode [2018-10-26 22:29:21,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:29:21,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:21,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:29:21,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:29:21,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:29:21,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:29:21,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:29:21,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:29:21,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... [2018-10-26 22:29:21,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:29:21,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:29:21,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:29:21,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:29:21,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:29:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:29:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:29:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:29:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:29:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:29:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:29:22,204 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:29:22,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:22 BoogieIcfgContainer [2018-10-26 22:29:22,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:29:22,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:29:22,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:29:22,213 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:29:22,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:29:21" (1/3) ... [2018-10-26 22:29:22,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bd39c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:22, skipping insertion in model container [2018-10-26 22:29:22,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:29:21" (2/3) ... [2018-10-26 22:29:22,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bd39c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:29:22, skipping insertion in model container [2018-10-26 22:29:22,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:22" (3/3) ... [2018-10-26 22:29:22,217 INFO L112 eAbstractionObserver]: Analyzing ICFG signextension2_true-unreach-call_true-termination.c [2018-10-26 22:29:22,227 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:29:22,235 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:29:22,256 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:29:22,297 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:29:22,298 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:29:22,298 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:29:22,298 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:29:22,298 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:29:22,298 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:29:22,299 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:29:22,299 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:29:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-26 22:29:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 22:29:22,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:29:22,326 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:29:22,328 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:29:22,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:29:22,335 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2018-10-26 22:29:22,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:29:22,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:22,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:29:22,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:29:22,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:29:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:29:22,750 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:29:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:29:22,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:29:22,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:29:22,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:29:22,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:29:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:29:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:29:22,773 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-10-26 22:29:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:29:22,804 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-10-26 22:29:22,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:29:22,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-26 22:29:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:29:22,812 INFO L225 Difference]: With dead ends: 16 [2018-10-26 22:29:22,813 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:29:22,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:29:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:29:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:29:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:29:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:29:22,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-10-26 22:29:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:29:22,836 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:29:22,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:29:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:29:22,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:29:22,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:29:22,895 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 22:29:22,895 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:29:22,896 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:29:22,896 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 22:29:22,896 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 22:29:22,896 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:29:22,896 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 3 19) the Hoare annotation is: true [2018-10-26 22:29:22,896 INFO L421 ceAbstractionStarter]: At program point L13(lines 3 19) the Hoare annotation is: false [2018-10-26 22:29:22,897 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 3 19) no Hoare annotation was computed. [2018-10-26 22:29:22,897 INFO L425 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2018-10-26 22:29:22,897 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 3 19) no Hoare annotation was computed. [2018-10-26 22:29:22,897 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-10-26 22:29:22,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:29:22 BoogieIcfgContainer [2018-10-26 22:29:22,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:29:22,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:29:22,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:29:22,906 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:29:22,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:29:22" (3/4) ... [2018-10-26 22:29:22,910 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 22:29:22,916 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 22:29:22,917 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 22:29:22,920 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-26 22:29:22,920 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 22:29:22,920 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 22:29:22,955 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a309bad6-baa3-4257-99cc-aa8ddff76ff0/bin-2019/utaipan/witness.graphml [2018-10-26 22:29:22,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:29:22,956 INFO L168 Benchmark]: Toolchain (without parser) took 1341.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -160.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:29:22,957 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:29:22,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.50 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-26 22:29:22,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.82 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:29:22,958 INFO L168 Benchmark]: Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:29:22,959 INFO L168 Benchmark]: RCFGBuilder took 375.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:29:22,959 INFO L168 Benchmark]: TraceAbstraction took 700.21 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-10-26 22:29:22,960 INFO L168 Benchmark]: Witness Printer took 49.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-10-26 22:29:22,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.50 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 949.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.82 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.65 ms. Allocated memory is still 1.0 GB. Free memory is still 949.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 375.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 700.21 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * Witness Printer took 49.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...