./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/init-2-n-u_true-unreach-call.i --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_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-2-n-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/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 d946872b60b0287e86f926284a8488559839a6f1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:51:38,284 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:51:38,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:51:38,292 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:51:38,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:51:38,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:51:38,293 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:51:38,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:51:38,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:51:38,296 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:51:38,297 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:51:38,297 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:51:38,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:51:38,298 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:51:38,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:51:38,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:51:38,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:51:38,301 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:51:38,303 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:51:38,305 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:51:38,305 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:51:38,306 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:51:38,307 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:51:38,307 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:51:38,307 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:51:38,308 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:51:38,308 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:51:38,309 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:51:38,309 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:51:38,309 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:51:38,310 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:51:38,310 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:51:38,310 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:51:38,310 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:51:38,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:51:38,311 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:51:38,311 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 08:51:38,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:51:38,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:51:38,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 08:51:38,323 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 08:51:38,323 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 08:51:38,323 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 08:51:38,323 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 08:51:38,324 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 08:51:38,324 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 08:51:38,324 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 08:51:38,324 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 08:51:38,324 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 08:51:38,325 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 08:51:38,326 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 08:51:38,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:51:38,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 08:51:38,327 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 08:51:38,329 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_a43736b2-68a8-452e-b26b-329ef1e26d8d/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 -> d946872b60b0287e86f926284a8488559839a6f1 [2018-11-10 08:51:38,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:51:38,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:51:38,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:51:38,360 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:51:38,360 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:51:38,360 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/init-2-n-u_true-unreach-call.i [2018-11-10 08:51:38,394 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/data/2fb903f68/26c7ce48cfb1400d905b505483d44db8/FLAG4842373dc [2018-11-10 08:51:38,805 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:51:38,805 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/sv-benchmarks/c/array-multidimensional/init-2-n-u_true-unreach-call.i [2018-11-10 08:51:38,809 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/data/2fb903f68/26c7ce48cfb1400d905b505483d44db8/FLAG4842373dc [2018-11-10 08:51:38,817 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/data/2fb903f68/26c7ce48cfb1400d905b505483d44db8 [2018-11-10 08:51:38,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:51:38,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:51:38,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:51:38,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:51:38,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:51:38,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305850f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38, skipping insertion in model container [2018-11-10 08:51:38,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:51:38,842 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:51:38,941 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:51:38,943 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:51:38,955 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:51:38,966 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:51:38,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38 WrapperNode [2018-11-10 08:51:38,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:51:38,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:51:38,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:51:38,967 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:51:38,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:51:38,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:51:38,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:51:38,986 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:51:38,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:38,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:39,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:39,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... [2018-11-10 08:51:39,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:51:39,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:51:39,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:51:39,002 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:51:39,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 08:51:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 08:51:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 08:51:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:51:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:51:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 08:51:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 08:51:39,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 08:51:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 08:51:39,192 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:51:39,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:39 BoogieIcfgContainer [2018-11-10 08:51:39,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:51:39,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 08:51:39,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 08:51:39,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 08:51:39,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 08:51:38" (1/3) ... [2018-11-10 08:51:39,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653133fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:51:39, skipping insertion in model container [2018-11-10 08:51:39,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:51:38" (2/3) ... [2018-11-10 08:51:39,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653133fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 08:51:39, skipping insertion in model container [2018-11-10 08:51:39,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:39" (3/3) ... [2018-11-10 08:51:39,198 INFO L112 eAbstractionObserver]: Analyzing ICFG init-2-n-u_true-unreach-call.i [2018-11-10 08:51:39,206 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 08:51:39,212 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 08:51:39,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 08:51:39,249 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 08:51:39,249 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 08:51:39,249 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 08:51:39,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:51:39,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:51:39,250 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 08:51:39,250 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:51:39,250 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 08:51:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-11-10 08:51:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 08:51:39,264 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:39,264 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:39,265 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:51:39,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash 319343225, now seen corresponding path program 1 times [2018-11-10 08:51:39,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:51:39,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:51:39,320 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 08:51:39,320 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 08:51:39,320 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/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 [2018-11-10 08:51:39,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,328 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 08:51:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:39,354 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 08:51:39,355 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 08:51:39,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:51:39,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:51:39,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,361 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:51:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:39,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:51:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:39,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:51:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:39,427 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:51:39,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-10 08:51:39,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:51:39,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 08:51:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 08:51:39,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 08:51:39,439 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-11-10 08:51:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:51:39,453 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2018-11-10 08:51:39,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 08:51:39,454 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-10 08:51:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:51:39,459 INFO L225 Difference]: With dead ends: 54 [2018-11-10 08:51:39,459 INFO L226 Difference]: Without dead ends: 25 [2018-11-10 08:51:39,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 08:51:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-10 08:51:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-10 08:51:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 08:51:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-10 08:51:39,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2018-11-10 08:51:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:51:39,484 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 08:51:39,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 08:51:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-10 08:51:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 08:51:39,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:39,485 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:39,485 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:51:39,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:39,486 INFO L82 PathProgramCache]: Analyzing trace with hash -855125148, now seen corresponding path program 1 times [2018-11-10 08:51:39,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:51:39,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:51:39,492 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 08:51:39,492 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 08:51:39,492 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 08:51:39,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,504 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 08:51:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:39,527 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 08:51:39,527 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 08:51:39,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 08:51:39,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 08:51:39,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,532 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 08:51:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:39,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:51:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:39,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 08:51:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:51:39,606 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:51:39,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-10 08:51:39,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:51:39,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 08:51:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 08:51:39,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:51:39,607 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2018-11-10 08:51:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:51:39,630 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-10 08:51:39,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 08:51:39,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-10 08:51:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:51:39,631 INFO L225 Difference]: With dead ends: 44 [2018-11-10 08:51:39,631 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 08:51:39,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:51:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 08:51:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-11-10 08:51:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 08:51:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-11-10 08:51:39,636 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2018-11-10 08:51:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:51:39,636 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-10 08:51:39,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 08:51:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2018-11-10 08:51:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 08:51:39,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 08:51:39,637 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 08:51:39,638 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 08:51:39,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1309373471, now seen corresponding path program 1 times [2018-11-10 08:51:39,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 08:51:39,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:51:39,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 08:51:39,642 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 08:51:39,642 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 08:51:39,642 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 08:51:39,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:51:39,649 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 08:51:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:51:39,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-11-10 08:51:39,672 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [29], [33], [37], [43], [47], [53], [65], [68], [70], [76], [77], [78], [80] [2018-11-10 08:51:39,701 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 08:51:39,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 08:51:39,808 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 08:51:39,809 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-10 08:51:39,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:51:39,812 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 08:51:39,905 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 75.32% of their original sizes. [2018-11-10 08:51:39,906 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 08:51:39,947 INFO L415 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2018-11-10 08:51:39,948 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 08:51:39,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 08:51:39,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 08:51:39,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 08:51:39,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 08:51:39,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 08:51:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:51:39,950 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 4 states. [2018-11-10 08:51:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 08:51:39,984 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-10 08:51:39,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 08:51:39,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-10 08:51:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 08:51:39,985 INFO L225 Difference]: With dead ends: 29 [2018-11-10 08:51:39,985 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 08:51:39,985 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 08:51:39,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 08:51:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 08:51:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 08:51:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 08:51:39,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-10 08:51:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 08:51:39,986 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:51:39,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 08:51:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:51:39,987 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 08:51:39,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 08:51:40,384 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 34 [2018-11-10 08:51:40,556 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 35 [2018-11-10 08:51:40,558 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:51:40,558 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:51:40,558 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:51:40,559 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 08:51:40,559 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 08:51:40,559 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 08:51:40,559 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 08:51:40,559 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 47) no Hoare annotation was computed. [2018-11-10 08:51:40,559 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 23 27) no Hoare annotation was computed. [2018-11-10 08:51:40,559 INFO L421 ceAbstractionStarter]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= main_~C~0 (+ |main_~#A~0.offset| 2147483647)) (<= (* 2 main_~m~0) 2000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= main_~i~0 (+ main_~C~0 2147483648)) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 1000 (+ main_~i~0 main_~m~0)) (= main_~i~0 0)) [2018-11-10 08:51:40,559 INFO L425 ceAbstractionStarter]: For program point L23-4(lines 23 27) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 40) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L421 ceAbstractionStarter]: At program point L36-3(lines 36 40) the Hoare annotation is: false [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point L36-4(lines 36 40) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 29) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 29) the Hoare annotation is: (and (<= main_~C~0 (+ |main_~#A~0.offset| 2147483647)) (<= (* 2 main_~m~0) 2000) (<= 3000 (* 2 main_~n~0)) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= (* 2 |main_~#A~0.offset|) 0) (<= main_~i~0 (+ main_~C~0 2147483648)) (<= 0 (+ main_~j~0 |main_~#A~0.offset|)) (<= 1000 main_~m~0) (= main_~i~0 0)) [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point L21-4(lines 21 29) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 47) no Hoare annotation was computed. [2018-11-10 08:51:40,560 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: false [2018-11-10 08:51:40,560 INFO L425 ceAbstractionStarter]: For program point L38-1(line 38) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point L34-1(lines 34 42) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L421 ceAbstractionStarter]: At program point L34-3(lines 34 42) the Hoare annotation is: false [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point L34-4(lines 34 42) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 47) the Hoare annotation is: true [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 08:51:40,561 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 08:51:40,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 08:51:40 BoogieIcfgContainer [2018-11-10 08:51:40,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 08:51:40,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:51:40,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:51:40,572 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:51:40,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:51:39" (3/4) ... [2018-11-10 08:51:40,575 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 08:51:40,578 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 08:51:40,578 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 08:51:40,578 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 08:51:40,581 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2018-11-10 08:51:40,581 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 08:51:40,582 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 08:51:40,611 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a43736b2-68a8-452e-b26b-329ef1e26d8d/bin-2019/utaipan/witness.graphml [2018-11-10 08:51:40,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:51:40,612 INFO L168 Benchmark]: Toolchain (without parser) took 1792.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 963.8 MB in the beginning and 804.5 MB in the end (delta: 159.3 MB). Peak memory consumption was 286.2 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,613 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:51:40,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.95 ms. Allocated memory is still 1.0 GB. Free memory was 963.8 MB in the beginning and 953.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 947.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,614 INFO L168 Benchmark]: Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:51:40,614 INFO L168 Benchmark]: RCFGBuilder took 190.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,615 INFO L168 Benchmark]: TraceAbstraction took 1378.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 811.4 MB in the end (delta: 294.0 MB). Peak memory consumption was 294.0 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,615 INFO L168 Benchmark]: Witness Printer took 40.43 ms. Allocated memory is still 1.2 GB. Free memory was 811.4 MB in the beginning and 804.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-10 08:51:40,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 145.95 ms. Allocated memory is still 1.0 GB. Free memory was 963.8 MB in the beginning and 953.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 947.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.28 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1378.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 811.4 MB in the end (delta: 294.0 MB). Peak memory consumption was 294.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.43 ms. Allocated memory is still 1.2 GB. Free memory was 811.4 MB in the beginning and 804.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((C <= A + 2147483647 && 2 * m <= 2000) && 3000 <= 2 * n) && !(A == 0)) && j + n <= 1500) && 2 * A <= 0) && i <= C + 2147483648) && 0 <= j + A) && 1000 <= m) && i == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((C <= A + 2147483647 && 2 * m <= 2000) && 3000 <= 2 * n) && !(A == 0)) && j + n <= 1500) && 2 * A <= 0) && i <= C + 2147483648) && 0 <= j + A) && 1000 <= i + m) && i == 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 6 SDslu, 24 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9683673469387755 AbsIntWeakeningRatio, 1.1904761904761905 AbsIntAvgWeakeningVarsNumRemoved, 58.61904761904762 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 14 NumberOfFragments, 102 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 656 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 1218 SizeOfPredicates, 2 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...