./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-acceleration/multivar_false-unreach-call1_true-termination.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_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/multivar_false-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/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 41f14415ec241c52b66ac43e6b6d8700e45c40dd .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:39:12,418 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:39:12,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:39:12,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:39:12,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:39:12,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:39:12,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:39:12,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:39:12,431 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:39:12,432 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:39:12,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:39:12,433 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:39:12,434 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:39:12,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:39:12,435 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:39:12,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:39:12,437 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:39:12,438 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:39:12,439 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:39:12,441 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:39:12,442 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:39:12,442 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:39:12,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:39:12,445 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:39:12,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:39:12,446 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:39:12,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:39:12,447 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:39:12,448 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:39:12,449 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:39:12,449 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:39:12,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:39:12,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:39:12,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:39:12,450 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:39:12,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:39:12,451 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 05:39:12,463 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:39:12,463 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:39:12,464 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:39:12,464 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:39:12,464 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:39:12,464 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:39:12,465 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 05:39:12,465 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:39:12,465 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 05:39:12,465 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 05:39:12,465 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:39:12,465 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:39:12,466 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:39:12,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:39:12,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:39:12,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:39:12,468 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 05:39:12,468 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_379b6f99-50b6-43f6-adbf-102149b52d90/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 -> 41f14415ec241c52b66ac43e6b6d8700e45c40dd [2018-11-10 05:39:12,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:39:12,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:39:12,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:39:12,506 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:39:12,507 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:39:12,507 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/multivar_false-unreach-call1_true-termination.i [2018-11-10 05:39:12,550 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/data/445bec2c4/125602ba79824933b40adb8fe46d8017/FLAGae774b42e [2018-11-10 05:39:12,912 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:39:12,913 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/sv-benchmarks/c/loop-acceleration/multivar_false-unreach-call1_true-termination.i [2018-11-10 05:39:12,919 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/data/445bec2c4/125602ba79824933b40adb8fe46d8017/FLAGae774b42e [2018-11-10 05:39:12,930 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/data/445bec2c4/125602ba79824933b40adb8fe46d8017 [2018-11-10 05:39:12,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:39:12,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:39:12,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:39:12,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:39:12,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:39:12,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:39:12" (1/1) ... [2018-11-10 05:39:12,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133164ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:12, skipping insertion in model container [2018-11-10 05:39:12,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:39:12" (1/1) ... [2018-11-10 05:39:12,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:39:12,963 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:39:13,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:39:13,078 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:39:13,089 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:39:13,099 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:39:13,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13 WrapperNode [2018-11-10 05:39:13,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:39:13,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:39:13,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:39:13,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:39:13,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:39:13,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:39:13,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:39:13,115 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:39:13,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... [2018-11-10 05:39:13,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:39:13,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:39:13,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:39:13,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:39:13,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/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 05:39:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:39:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:39:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:39:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:39:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:39:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:39:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:39:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:39:13,323 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:39:13,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:39:13 BoogieIcfgContainer [2018-11-10 05:39:13,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:39:13,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:39:13,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:39:13,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:39:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:39:12" (1/3) ... [2018-11-10 05:39:13,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c300e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:39:13, skipping insertion in model container [2018-11-10 05:39:13,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:39:13" (2/3) ... [2018-11-10 05:39:13,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c300e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:39:13, skipping insertion in model container [2018-11-10 05:39:13,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:39:13" (3/3) ... [2018-11-10 05:39:13,329 INFO L112 eAbstractionObserver]: Analyzing ICFG multivar_false-unreach-call1_true-termination.i [2018-11-10 05:39:13,339 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:39:13,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:39:13,358 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:39:13,388 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:39:13,388 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:39:13,388 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:39:13,388 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:39:13,388 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:39:13,388 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:39:13,389 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:39:13,389 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:39:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-10 05:39:13,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 05:39:13,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:39:13,410 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:39:13,412 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:39:13,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:39:13,416 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-10 05:39:13,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:39:13,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:39:13,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:39:13,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:39:13,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:39:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:39:13,492 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 05:39:13,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:39:13,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:39:13,494 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 05:39:13,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:39:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:39:13,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:39:13,508 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-10 05:39:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:39:13,524 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-10 05:39:13,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:39:13,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 05:39:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:39:13,531 INFO L225 Difference]: With dead ends: 29 [2018-11-10 05:39:13,531 INFO L226 Difference]: Without dead ends: 12 [2018-11-10 05:39:13,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 05:39:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-10 05:39:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-10 05:39:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-10 05:39:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-10 05:39:13,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-10 05:39:13,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:39:13,560 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-10 05:39:13,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:39:13,561 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-10 05:39:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 05:39:13,561 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:39:13,561 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:39:13,562 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:39:13,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:39:13,562 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-10 05:39:13,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:39:13,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:39:13,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:39:13,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:39:13,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:39:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:39:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:39:13,598 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:39:13,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:39:13 BoogieIcfgContainer [2018-11-10 05:39:13,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:39:13,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:39:13,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:39:13,615 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:39:13,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:39:13" (3/4) ... [2018-11-10 05:39:13,617 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:39:13,647 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_379b6f99-50b6-43f6-adbf-102149b52d90/bin-2019/utaipan/witness.graphml [2018-11-10 05:39:13,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:39:13,648 INFO L168 Benchmark]: Toolchain (without parser) took 714.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -143.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:39:13,649 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:39:13,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 947.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:39:13,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.74 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:39:13,650 INFO L168 Benchmark]: Boogie Preprocessor took 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:39:13,650 INFO L168 Benchmark]: RCFGBuilder took 193.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 05:39:13,651 INFO L168 Benchmark]: TraceAbstraction took 291.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:39:13,652 INFO L168 Benchmark]: Witness Printer took 32.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:39:13,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.74 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 947.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.74 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.71 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 193.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 291.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int x = __VERIFIER_nondet_uint(); [L11] unsigned int y = x + 1; VAL [x=1024, y=1025] [L12] COND FALSE !(x < 1024) VAL [x=1024, y=1025] [L16] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...