./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/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 73643ecf8e1581c13142517bcc63dc5d77c96d29 .................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-03 04:54:04,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 04:54:04,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 04:54:04,217 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 04:54:04,218 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 04:54:04,218 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 04:54:04,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 04:54:04,220 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 04:54:04,221 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 04:54:04,222 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 04:54:04,222 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 04:54:04,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 04:54:04,223 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 04:54:04,224 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 04:54:04,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 04:54:04,225 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 04:54:04,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 04:54:04,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 04:54:04,228 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 04:54:04,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 04:54:04,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 04:54:04,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 04:54:04,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 04:54:04,232 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 04:54:04,232 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 04:54:04,233 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 04:54:04,234 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 04:54:04,234 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 04:54:04,235 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 04:54:04,235 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 04:54:04,235 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 04:54:04,236 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 04:54:04,236 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 04:54:04,236 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 04:54:04,237 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 04:54:04,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 04:54:04,238 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-03 04:54:04,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 04:54:04,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 04:54:04,248 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 04:54:04,249 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 04:54:04,249 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 04:54:04,250 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 04:54:04,250 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 04:54:04,250 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 04:54:04,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 04:54:04,250 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 04:54:04,251 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 04:54:04,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 04:54:04,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 04:54:04,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 04:54:04,253 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 04:54:04,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 04:54:04,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 04:54:04,253 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 04:54:04,253 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_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/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 -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-12-03 04:54:04,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 04:54:04,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 04:54:04,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 04:54:04,286 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 04:54:04,287 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 04:54:04,287 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-12-03 04:54:04,324 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/data/b4872ea2b/d764f92bc57949e59e057b48a21c4b19/FLAG85830a01c [2018-12-03 04:54:04,698 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 04:54:04,698 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-12-03 04:54:04,701 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/data/b4872ea2b/d764f92bc57949e59e057b48a21c4b19/FLAG85830a01c [2018-12-03 04:54:04,709 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/data/b4872ea2b/d764f92bc57949e59e057b48a21c4b19 [2018-12-03 04:54:04,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 04:54:04,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 04:54:04,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 04:54:04,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 04:54:04,714 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 04:54:04,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04, skipping insertion in model container [2018-12-03 04:54:04,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 04:54:04,729 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 04:54:04,810 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:54:04,812 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 04:54:04,821 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 04:54:04,828 INFO L195 MainTranslator]: Completed translation [2018-12-03 04:54:04,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04 WrapperNode [2018-12-03 04:54:04,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 04:54:04,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 04:54:04,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 04:54:04,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 04:54:04,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 04:54:04,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 04:54:04,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 04:54:04,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 04:54:04,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... [2018-12-03 04:54:04,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 04:54:04,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 04:54:04,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 04:54:04,853 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 04:54:04,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/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 [2018-12-03 04:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 04:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 04:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 04:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 04:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 04:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 04:54:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-03 04:54:04,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-03 04:54:05,005 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 04:54:05,005 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 04:54:05,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:54:05 BoogieIcfgContainer [2018-12-03 04:54:05,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 04:54:05,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 04:54:05,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 04:54:05,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 04:54:05,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:54:04" (1/3) ... [2018-12-03 04:54:05,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1cdf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:54:05, skipping insertion in model container [2018-12-03 04:54:05,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:54:04" (2/3) ... [2018-12-03 04:54:05,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1cdf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:54:05, skipping insertion in model container [2018-12-03 04:54:05,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:54:05" (3/3) ... [2018-12-03 04:54:05,010 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-12-03 04:54:05,016 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 04:54:05,020 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 04:54:05,029 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 04:54:05,047 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 04:54:05,047 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 04:54:05,047 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 04:54:05,047 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 04:54:05,047 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 04:54:05,047 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 04:54:05,048 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 04:54:05,048 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 04:54:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-03 04:54:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 04:54:05,060 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:54:05,060 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:54:05,062 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:54:05,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:54:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2018-12-03 04:54:05,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:54:05,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:54:05,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:54:05,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:54:05,094 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:54:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 04:54:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 04:54:05,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 04:54:05,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 04:54:05,129 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 04:54:05,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 04:54:05,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 04:54:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 04:54:05,140 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-03 04:54:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 04:54:05,152 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-12-03 04:54:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 04:54:05,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-03 04:54:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 04:54:05,157 INFO L225 Difference]: With dead ends: 31 [2018-12-03 04:54:05,157 INFO L226 Difference]: Without dead ends: 12 [2018-12-03 04:54:05,159 INFO L631 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 [2018-12-03 04:54:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-03 04:54:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-03 04:54:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-03 04:54:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-12-03 04:54:05,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2018-12-03 04:54:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 04:54:05,179 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-03 04:54:05,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 04:54:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2018-12-03 04:54:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 04:54:05,179 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 04:54:05,179 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 04:54:05,179 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-03 04:54:05,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 04:54:05,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2018-12-03 04:54:05,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 04:54:05,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:54:05,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 04:54:05,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 04:54:05,180 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 04:54:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:54:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 04:54:05,202 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 04:54:05,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:54:05 BoogieIcfgContainer [2018-12-03 04:54:05,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 04:54:05,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 04:54:05,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 04:54:05,215 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 04:54:05,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:54:05" (3/4) ... [2018-12-03 04:54:05,217 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 04:54:05,238 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6d6583aa-dd00-46f3-b90c-9a8d31ae9280/bin-2019/utaipan/witness.graphml [2018-12-03 04:54:05,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 04:54:05,239 INFO L168 Benchmark]: Toolchain (without parser) took 527.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 958.8 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:54:05,240 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:54:05,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.55 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 04:54:05,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.29 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:54:05,241 INFO L168 Benchmark]: Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 04:54:05,241 INFO L168 Benchmark]: RCFGBuilder took 153.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-12-03 04:54:05,241 INFO L168 Benchmark]: TraceAbstraction took 208.57 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-12-03 04:54:05,241 INFO L168 Benchmark]: Witness Printer took 23.91 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. [2018-12-03 04:54:05,243 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.55 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 948.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.29 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.81 ms. Allocated memory is still 1.0 GB. Free memory is still 948.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 153.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -193.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 208.57 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * Witness Printer took 23.91 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: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100