./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-multidimensional/min-3-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_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/min-3-n-u_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 6fd867e63038658df28e7c6e8afa09eb1914f70f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:11:43,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:11:43,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:11:43,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:11:43,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:11:43,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:11:43,913 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:11:43,915 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:11:43,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:11:43,917 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:11:43,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:11:43,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:11:43,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:11:43,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:11:43,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:11:43,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:11:43,922 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:11:43,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:11:43,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:11:43,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:11:43,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:11:43,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:11:43,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:11:43,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:11:43,931 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:11:43,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:11:43,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:11:43,933 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:11:43,934 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:11:43,935 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:11:43,935 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:11:43,935 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:11:43,935 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:11:43,936 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:11:43,937 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:11:43,938 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:11:43,938 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 10:11:43,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:11:43,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:11:43,951 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:11:43,951 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 10:11:43,951 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 10:11:43,951 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 10:11:43,951 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 10:11:43,952 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 10:11:43,952 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 10:11:43,952 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 10:11:43,952 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 10:11:43,953 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:11:43,953 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:11:43,953 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:11:43,953 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:11:43,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:11:43,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:11:43,955 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:11:43,955 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:11:43,955 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:11:43,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:11:43,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:11:43,956 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:11:43,956 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 10:11:43,957 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_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 -> 6fd867e63038658df28e7c6e8afa09eb1914f70f [2018-11-10 10:11:43,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:11:43,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:11:43,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:11:43,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:11:43,999 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:11:44,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/../../sv-benchmarks/c/array-multidimensional/min-3-n-u_true-unreach-call.i [2018-11-10 10:11:44,056 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/data/5d0bf30fc/1eaa96016bf74e98912251488e751030/FLAG51d9403d8 [2018-11-10 10:11:44,435 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:11:44,436 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/sv-benchmarks/c/array-multidimensional/min-3-n-u_true-unreach-call.i [2018-11-10 10:11:44,442 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/data/5d0bf30fc/1eaa96016bf74e98912251488e751030/FLAG51d9403d8 [2018-11-10 10:11:44,454 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/data/5d0bf30fc/1eaa96016bf74e98912251488e751030 [2018-11-10 10:11:44,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:11:44,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 10:11:44,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:11:44,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:11:44,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:11:44,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1c2489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44, skipping insertion in model container [2018-11-10 10:11:44,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:11:44,490 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:11:44,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:11:44,622 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:11:44,641 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:11:44,656 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:11:44,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44 WrapperNode [2018-11-10 10:11:44,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:11:44,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 10:11:44,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 10:11:44,657 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 10:11:44,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 10:11:44,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:11:44,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:11:44,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:11:44,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... [2018-11-10 10:11:44,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:11:44,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:11:44,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:11:44,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:11:44,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:11:44,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:11:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:11:44,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:11:44,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:11:44,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:11:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 10:11:44,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 10:11:45,077 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:11:45,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:11:45 BoogieIcfgContainer [2018-11-10 10:11:45,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:11:45,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:11:45,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:11:45,080 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:11:45,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:11:44" (1/3) ... [2018-11-10 10:11:45,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cee5cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:11:45, skipping insertion in model container [2018-11-10 10:11:45,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:11:44" (2/3) ... [2018-11-10 10:11:45,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cee5cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:11:45, skipping insertion in model container [2018-11-10 10:11:45,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:11:45" (3/3) ... [2018-11-10 10:11:45,083 INFO L112 eAbstractionObserver]: Analyzing ICFG min-3-n-u_true-unreach-call.i [2018-11-10 10:11:45,090 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:11:45,096 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 10:11:45,112 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 10:11:45,135 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:11:45,135 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:11:45,135 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:11:45,135 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:11:45,135 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:11:45,135 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:11:45,135 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:11:45,136 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:11:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-11-10 10:11:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 10:11:45,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:11:45,153 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:11:45,155 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:11:45,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:45,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2100348556, now seen corresponding path program 1 times [2018-11-10 10:11:45,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:11:45,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:11:45,223 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 10:11:45,224 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 10:11:45,224 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:45,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 10:11:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:45,274 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 10:11:45,276 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 10:11:45,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:11:45,276 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:45,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,283 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 10:11:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:45,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:11:45,341 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 10:11:45,341 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:11:45,357 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 10:11:45,378 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:11:45,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-10 10:11:45,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:11:45,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 10:11:45,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 10:11:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 10:11:45,393 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-11-10 10:11:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:11:45,411 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2018-11-10 10:11:45,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 10:11:45,412 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-10 10:11:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:11:45,421 INFO L225 Difference]: With dead ends: 88 [2018-11-10 10:11:45,421 INFO L226 Difference]: Without dead ends: 42 [2018-11-10 10:11:45,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 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 10:11:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-10 10:11:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-10 10:11:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 10:11:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2018-11-10 10:11:45,453 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 20 [2018-11-10 10:11:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:11:45,454 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2018-11-10 10:11:45,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 10:11:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2018-11-10 10:11:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 10:11:45,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:11:45,455 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:11:45,455 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:11:45,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash 520224929, now seen corresponding path program 1 times [2018-11-10 10:11:45,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:11:45,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:11:45,463 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 10:11:45,463 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 10:11:45,463 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:45,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,470 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 10:11:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:45,504 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-10 10:11:45,505 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 10:11:45,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:11:45,505 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:45,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,512 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 10:11:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:45,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:11:45,582 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 10:11:45,583 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:11:45,593 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 10:11:45,612 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:11:45,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2018-11-10 10:11:45,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:11:45,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 10:11:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 10:11:45,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 10:11:45,614 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 3 states. [2018-11-10 10:11:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:11:45,660 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2018-11-10 10:11:45,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 10:11:45,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-10 10:11:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:11:45,666 INFO L225 Difference]: With dead ends: 78 [2018-11-10 10:11:45,666 INFO L226 Difference]: Without dead ends: 50 [2018-11-10 10:11:45,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 10:11:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-10 10:11:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-11-10 10:11:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 10:11:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-10 10:11:45,674 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 22 [2018-11-10 10:11:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:11:45,674 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-10 10:11:45,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 10:11:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-10 10:11:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 10:11:45,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:11:45,675 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, 1, 1, 1, 1, 1] [2018-11-10 10:11:45,676 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:11:45,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:45,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1874083380, now seen corresponding path program 1 times [2018-11-10 10:11:45,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:11:45,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:45,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:11:45,683 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 10:11:45,683 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 10:11:45,683 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/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 10:11:45,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:45,692 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 10:11:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:45,719 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-10 10:11:45,721 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [43], [47], [51], [55], [96], [100], [106], [110], [116], [120], [126], [142], [145], [147], [153], [154], [155], [157] [2018-11-10 10:11:45,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:11:45,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:11:45,909 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 10:11:45,910 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 30 variables. [2018-11-10 10:11:45,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:45,915 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 10:11:46,033 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 76.97% of their original sizes. [2018-11-10 10:11:46,034 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 10:11:46,086 INFO L415 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2018-11-10 10:11:46,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 10:11:46,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:11:46,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 10:11:46,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:11:46,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 10:11:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 10:11:46,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 10:11:46,089 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-10 10:11:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:11:46,488 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2018-11-10 10:11:46,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 10:11:46,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-10 10:11:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:11:46,490 INFO L225 Difference]: With dead ends: 104 [2018-11-10 10:11:46,490 INFO L226 Difference]: Without dead ends: 68 [2018-11-10 10:11:46,490 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 26 GetRequests, 24 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 10:11:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-10 10:11:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-11-10 10:11:46,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 10:11:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2018-11-10 10:11:46,509 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 27 [2018-11-10 10:11:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:11:46,509 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2018-11-10 10:11:46,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 10:11:46,510 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2018-11-10 10:11:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 10:11:46,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:11:46,511 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:11:46,512 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:11:46,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:46,513 INFO L82 PathProgramCache]: Analyzing trace with hash 532091905, now seen corresponding path program 1 times [2018-11-10 10:11:46,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:11:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:11:46,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:11:46,520 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 10:11:46,521 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 10:11:46,521 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 10:11:46,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:11:46,536 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-10 10:11:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:11:46,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-11-10 10:11:46,589 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [15], [19], [23], [25], [29], [33], [39], [43], [47], [51], [55], [57], [61], [65], [67], [71], [75], [88], [92], [96], [100], [106], [110], [116], [120], [126], [142], [145], [147], [153], [154], [155], [157] [2018-11-10 10:11:46,591 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 10:11:46,591 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 10:11:46,621 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-10 10:11:46,622 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Never found a fixpoint. Largest state had 30 variables. [2018-11-10 10:11:46,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:11:46,625 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-10 10:11:46,720 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 69.78% of their original sizes. [2018-11-10 10:11:46,720 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-10 10:11:46,781 INFO L415 sIntCurrentIteration]: We unified 41 AI predicates to 41 [2018-11-10 10:11:46,782 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-10 10:11:46,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:11:46,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 10:11:46,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:11:46,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 10:11:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 10:11:46,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 10:11:46,783 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2018-11-10 10:11:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:11:46,830 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2018-11-10 10:11:46,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 10:11:46,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-11-10 10:11:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:11:46,831 INFO L225 Difference]: With dead ends: 62 [2018-11-10 10:11:46,831 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 10:11:46,832 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 10:11:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 10:11:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 10:11:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 10:11:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 10:11:46,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-10 10:11:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:11:46,833 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 10:11:46,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 10:11:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 10:11:46,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 10:11:46,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 10:11:46,961 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-11-10 10:11:47,064 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 173 [2018-11-10 10:11:47,569 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 34 [2018-11-10 10:11:47,806 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 34 [2018-11-10 10:11:48,112 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2018-11-10 10:11:48,115 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:11:48,115 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:11:48,116 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:11:48,116 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:11:48,116 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 10:11:48,116 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:11:48,116 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:11:48,116 INFO L421 ceAbstractionStarter]: At program point L68-3(lines 68 71) the Hoare annotation is: false [2018-11-10 10:11:48,116 INFO L425 ceAbstractionStarter]: For program point L68-4(lines 68 71) no Hoare annotation was computed. [2018-11-10 10:11:48,117 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 77) no Hoare annotation was computed. [2018-11-10 10:11:48,117 INFO L421 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: false [2018-11-10 10:11:48,117 INFO L425 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2018-11-10 10:11:48,117 INFO L425 ceAbstractionStarter]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2018-11-10 10:11:48,117 INFO L421 ceAbstractionStarter]: At program point L28-3(lines 28 31) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= (* 2 main_~m~0) 2000) (<= 3300 (+ main_~n~0 main_~p~0)) (<= main_~p~0 (+ main_~n~0 300)) (<= (+ main_~i~0 |main_~#A~0.offset|) 0) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= 1000 (+ main_~i~0 main_~m~0)) (<= 0 (* 2 |main_~#A~0.offset|)) (<= main_~k~0 main_~j~0)) [2018-11-10 10:11:48,117 INFO L425 ceAbstractionStarter]: For program point L28-4(lines 28 31) no Hoare annotation was computed. [2018-11-10 10:11:48,117 INFO L425 ceAbstractionStarter]: For program point L45-1(lines 45 53) no Hoare annotation was computed. [2018-11-10 10:11:48,118 INFO L421 ceAbstractionStarter]: At program point L45-3(lines 45 53) the Hoare annotation is: false [2018-11-10 10:11:48,118 INFO L425 ceAbstractionStarter]: For program point L45-4(lines 45 53) no Hoare annotation was computed. [2018-11-10 10:11:48,118 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 77) no Hoare annotation was computed. [2018-11-10 10:11:48,118 INFO L425 ceAbstractionStarter]: For program point L63-1(lines 63 75) no Hoare annotation was computed. [2018-11-10 10:11:48,118 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 77) the Hoare annotation is: true [2018-11-10 10:11:48,118 INFO L421 ceAbstractionStarter]: At program point L63-3(lines 63 75) the Hoare annotation is: false [2018-11-10 10:11:48,118 INFO L425 ceAbstractionStarter]: For program point L63-4(lines 63 75) no Hoare annotation was computed. [2018-11-10 10:11:48,118 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-11-10 10:11:48,119 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 51) the Hoare annotation is: false [2018-11-10 10:11:48,119 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2018-11-10 10:11:48,119 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 23 35) no Hoare annotation was computed. [2018-11-10 10:11:48,119 INFO L421 ceAbstractionStarter]: At program point L23-3(lines 23 35) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= (* 2 main_~m~0) 2000) (<= 3300 (+ main_~n~0 main_~p~0)) (<= main_~p~0 (+ main_~n~0 300)) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= main_~i~0 0) (<= 1000 (+ main_~i~0 main_~m~0)) (<= 0 (* 2 |main_~#A~0.offset|)) (<= main_~k~0 main_~j~0)) [2018-11-10 10:11:48,119 INFO L425 ceAbstractionStarter]: For program point L23-4(lines 23 35) no Hoare annotation was computed. [2018-11-10 10:11:48,119 INFO L425 ceAbstractionStarter]: For program point L48(lines 48 49) no Hoare annotation was computed. [2018-11-10 10:11:48,119 INFO L425 ceAbstractionStarter]: For program point L48-2(lines 48 49) no Hoare annotation was computed. [2018-11-10 10:11:48,120 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 66 73) no Hoare annotation was computed. [2018-11-10 10:11:48,120 INFO L421 ceAbstractionStarter]: At program point L66-3(lines 66 73) the Hoare annotation is: false [2018-11-10 10:11:48,120 INFO L425 ceAbstractionStarter]: For program point L66-4(lines 66 73) no Hoare annotation was computed. [2018-11-10 10:11:48,120 INFO L425 ceAbstractionStarter]: For program point L42-1(lines 42 55) no Hoare annotation was computed. [2018-11-10 10:11:48,120 INFO L421 ceAbstractionStarter]: At program point L42-3(lines 42 55) the Hoare annotation is: false [2018-11-10 10:11:48,120 INFO L425 ceAbstractionStarter]: For program point L42-4(lines 42 55) no Hoare annotation was computed. [2018-11-10 10:11:48,120 INFO L425 ceAbstractionStarter]: For program point L26-1(lines 26 33) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L421 ceAbstractionStarter]: At program point L26-3(lines 26 33) the Hoare annotation is: (and (<= |main_~#A~0.offset| main_~k~0) (<= (* 2 main_~m~0) 2000) (<= 3300 (+ main_~n~0 main_~p~0)) (<= main_~p~0 (+ main_~n~0 300)) (<= (+ main_~i~0 |main_~#A~0.offset|) 0) (not (= |main_~#A~0.base| 0)) (<= (+ main_~j~0 main_~n~0) 1500) (<= 1000 (+ main_~i~0 main_~m~0)) (<= 0 (* 2 |main_~#A~0.offset|)) (<= main_~k~0 main_~j~0)) [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point L26-4(lines 26 33) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point L68-1(lines 68 71) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 10:11:48,121 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 10:11:48,122 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 10:11:48,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:11:48 BoogieIcfgContainer [2018-11-10 10:11:48,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 10:11:48,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:11:48,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:11:48,136 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:11:48,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:11:45" (3/4) ... [2018-11-10 10:11:48,140 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 10:11:48,146 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 10:11:48,147 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 10:11:48,147 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 10:11:48,152 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2018-11-10 10:11:48,152 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-11-10 10:11:48,153 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 10:11:48,203 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_20894e3a-32a6-40b8-a3b0-cde2f8df62db/bin-2019/utaipan/witness.graphml [2018-11-10 10:11:48,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:11:48,204 INFO L168 Benchmark]: Toolchain (without parser) took 3746.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.3 MB). Free memory was 959.2 MB in the beginning and 867.9 MB in the end (delta: 91.2 MB). Peak memory consumption was 324.5 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,205 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:11:48,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.73 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,206 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 943.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,206 INFO L168 Benchmark]: RCFGBuilder took 358.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,206 INFO L168 Benchmark]: TraceAbstraction took 3056.77 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 873.0 MB in the end (delta: 267.5 MB). Peak memory consumption was 332.6 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,207 INFO L168 Benchmark]: Witness Printer took 67.82 ms. Allocated memory is still 1.3 GB. Free memory was 873.0 MB in the beginning and 867.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-10 10:11:48,209 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.73 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 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 34.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 943.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 358.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3056.77 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 65.0 MB). Free memory was 1.1 GB in the beginning and 873.0 MB in the end (delta: 267.5 MB). Peak memory consumption was 332.6 MB. Max. memory is 11.5 GB. * Witness Printer took 67.82 ms. Allocated memory is still 1.3 GB. Free memory was 873.0 MB in the beginning and 867.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 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: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((((A <= k && 2 * m <= 2000) && 3300 <= n + p) && p <= n + 300) && i + A <= 0) && !(A == 0)) && j + n <= 1500) && 1000 <= i + m) && 0 <= 2 * A) && k <= j - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((A <= k && 2 * m <= 2000) && 3300 <= n + p) && p <= n + 300) && i + A <= 0) && !(A == 0)) && j + n <= 1500) && 1000 <= i + m) && 0 <= 2 * A) && k <= j - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((A <= k && 2 * m <= 2000) && 3300 <= n + p) && p <= n + 300) && !(A == 0)) && j + n <= 1500) && i <= 0) && 1000 <= i + m) && 0 <= 2 * A) && k <= j - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 47 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 1.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 152 SDtfs, 42 SDslu, 77 SDs, 0 SdLazy, 25 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 149 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9776119402985073 AbsIntWeakeningRatio, 1.2537313432835822 AbsIntAvgWeakeningVarsNumRemoved, 57.850746268656714 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 148 HoareAnnotationTreeSize, 18 FomulaSimplifications, 631 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1337 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1940 SizeOfPredicates, 2 NumberOfNonLiveVariables, 220 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...