./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c --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_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/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 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 ............................................................................................................................................................................................................................................................................................................................. 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 [2018-12-08 19:24:06,227 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:24:06,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:24:06,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:24:06,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:24:06,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:24:06,236 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:24:06,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:24:06,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:24:06,238 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:24:06,239 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:24:06,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:24:06,239 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:24:06,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:24:06,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:24:06,241 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:24:06,242 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:24:06,243 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:24:06,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:24:06,245 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:24:06,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:24:06,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:24:06,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:24:06,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:24:06,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:24:06,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:24:06,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:24:06,249 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:24:06,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:24:06,250 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:24:06,250 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:24:06,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:24:06,251 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:24:06,251 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:24:06,251 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:24:06,252 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:24:06,252 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 19:24:06,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:24:06,262 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:24:06,262 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 19:24:06,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 19:24:06,263 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 19:24:06,264 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 19:24:06,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:24:06,264 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 19:24:06,264 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:24:06,264 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 19:24:06,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 19:24:06,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:24:06,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 19:24:06,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 19:24:06,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 19:24:06,266 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_33c44165-04c0-4e71-8bd4-57c788cd6413/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 -> 2aa6c4430411ceeb023b25a4c3a2c7228d94ed35 [2018-12-08 19:24:06,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:24:06,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:24:06,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:24:06,299 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:24:06,299 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:24:06,299 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-12-08 19:24:06,343 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/data/5200b0ee1/0e37d0c2a9a64011a902f5a82d4322b9/FLAG35ba72eac [2018-12-08 19:24:06,783 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:24:06,784 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/sv-benchmarks/c/ldv-regression/test29_false-unreach-call_true-termination.c [2018-12-08 19:24:06,787 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/data/5200b0ee1/0e37d0c2a9a64011a902f5a82d4322b9/FLAG35ba72eac [2018-12-08 19:24:06,795 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/data/5200b0ee1/0e37d0c2a9a64011a902f5a82d4322b9 [2018-12-08 19:24:06,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:24:06,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:24:06,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:24:06,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:24:06,800 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:24:06,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdf4af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06, skipping insertion in model container [2018-12-08 19:24:06,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:24:06,816 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:24:06,901 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:24:06,907 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:24:06,917 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:24:06,925 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:24:06,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06 WrapperNode [2018-12-08 19:24:06,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:24:06,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:24:06,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:24:06,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:24:06,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:24:06,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:24:06,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:24:06,939 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:24:06,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... [2018-12-08 19:24:06,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:24:06,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:24:06,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:24:06,982 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:24:06,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/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 [2018-12-08 19:24:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 19:24:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 19:24:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 19:24:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 19:24:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:24:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:24:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 19:24:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 19:24:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 19:24:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 19:24:07,116 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:24:07,116 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 19:24:07,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:24:07 BoogieIcfgContainer [2018-12-08 19:24:07,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:24:07,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 19:24:07,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 19:24:07,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 19:24:07,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 07:24:06" (1/3) ... [2018-12-08 19:24:07,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583b13b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:24:07, skipping insertion in model container [2018-12-08 19:24:07,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:24:06" (2/3) ... [2018-12-08 19:24:07,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583b13b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:24:07, skipping insertion in model container [2018-12-08 19:24:07,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:24:07" (3/3) ... [2018-12-08 19:24:07,121 INFO L112 eAbstractionObserver]: Analyzing ICFG test29_false-unreach-call_true-termination.c [2018-12-08 19:24:07,127 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 19:24:07,131 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 19:24:07,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 19:24:07,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 19:24:07,160 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 19:24:07,160 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 19:24:07,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:24:07,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:24:07,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 19:24:07,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:24:07,160 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 19:24:07,170 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-08 19:24:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 19:24:07,173 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:24:07,174 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:24:07,175 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:24:07,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:24:07,178 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2018-12-08 19:24:07,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:24:07,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:24:07,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:24:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:24:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:24:07,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:24:07,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:24:07,288 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:24:07,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:24:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:24:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:24:07,300 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2018-12-08 19:24:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:24:07,341 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-12-08 19:24:07,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:24:07,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-12-08 19:24:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:24:07,347 INFO L225 Difference]: With dead ends: 34 [2018-12-08 19:24:07,347 INFO L226 Difference]: Without dead ends: 21 [2018-12-08 19:24:07,349 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:24:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-08 19:24:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-12-08 19:24:07,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 19:24:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-08 19:24:07,371 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-12-08 19:24:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:24:07,371 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-08 19:24:07,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:24:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-08 19:24:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 19:24:07,372 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:24:07,372 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:24:07,372 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:24:07,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:24:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2018-12-08 19:24:07,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:24:07,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:24:07,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,373 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:24:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:24:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:24:07,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:24:07,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 19:24:07,426 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:24:07,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 19:24:07,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 19:24:07,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 19:24:07,428 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2018-12-08 19:24:07,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:24:07,474 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-12-08 19:24:07,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 19:24:07,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-08 19:24:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:24:07,475 INFO L225 Difference]: With dead ends: 23 [2018-12-08 19:24:07,475 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 19:24:07,476 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:24:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 19:24:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 19:24:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 19:24:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-12-08 19:24:07,478 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2018-12-08 19:24:07,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:24:07,479 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-12-08 19:24:07,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 19:24:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-12-08 19:24:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 19:24:07,479 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:24:07,479 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:24:07,480 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:24:07,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:24:07,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2018-12-08 19:24:07,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:24:07,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:24:07,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:24:07,481 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:24:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:24:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:24:07,516 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 19:24:07,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 07:24:07 BoogieIcfgContainer [2018-12-08 19:24:07,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 19:24:07,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:24:07,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:24:07,534 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:24:07,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:24:07" (3/4) ... [2018-12-08 19:24:07,536 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 19:24:07,566 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_33c44165-04c0-4e71-8bd4-57c788cd6413/bin-2019/utaipan/witness.graphml [2018-12-08 19:24:07,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:24:07,567 INFO L168 Benchmark]: Toolchain (without parser) took 769.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 953.5 MB in the beginning and 1.0 GB in the end (delta: -75.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2018-12-08 19:24:07,567 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:24:07,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.17 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 941.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 19:24:07,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.50 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:24:07,568 INFO L168 Benchmark]: Boogie Preprocessor took 41.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:24:07,568 INFO L168 Benchmark]: RCFGBuilder took 134.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-08 19:24:07,569 INFO L168 Benchmark]: TraceAbstraction took 416.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2018-12-08 19:24:07,569 INFO L168 Benchmark]: Witness Printer took 32.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:24:07,571 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.17 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 941.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.50 ms. Allocated memory is still 1.0 GB. Free memory is still 941.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 134.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 416.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 32.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 VAL [d1={7:0}, d2={6:0}, n=0, n ? &d1 : &d2={6:0}] [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 VAL [d1={7:0}, d1.a=1, d2={6:0}, n=0, pd={6:0}, pd == &d2 && d1.a != 0=1] [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() VAL [d1={7:0}, d2={6:0}, n=0, pd={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 22 SDslu, 40 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...