./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test21-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/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 36029c97ff36b924dec4fff6e18b89b3177e9048 .................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 11:26:50,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:50,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:50,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:50,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:50,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:50,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:50,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:50,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:50,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:50,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:50,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:50,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:50,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:50,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:50,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:50,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:50,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:50,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:50,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:50,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:50,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:50,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:50,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:50,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:50,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:50,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:50,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:50,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:50,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:50,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:50,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:50,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:50,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:50,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:50,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:50,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:50,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:50,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:50,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:50,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:50,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:50,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:50,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:50,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:50,281 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:50,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:50,281 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:50,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:50,282 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:50,282 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:50,282 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:50,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:50,282 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:50,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:50,283 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:50,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:50,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:50,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:50,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:50,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:50,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:50,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:50,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:50,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:50,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:50,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:50,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:50,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:50,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:50,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:50,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:50,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:50,287 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:50,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:50,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:50,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:50,288 INFO L138 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_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/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 -> 36029c97ff36b924dec4fff6e18b89b3177e9048 [2019-10-22 11:26:50,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:50,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:50,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:50,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:50,335 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:50,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test21-2.c [2019-10-22 11:26:50,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/data/6a1105935/5c18d7c5cda24fdfb0bc83d4ced9b440/FLAGa6074c9f9 [2019-10-22 11:26:50,771 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:50,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/sv-benchmarks/c/ldv-regression/test21-2.c [2019-10-22 11:26:50,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/data/6a1105935/5c18d7c5cda24fdfb0bc83d4ced9b440/FLAGa6074c9f9 [2019-10-22 11:26:51,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/data/6a1105935/5c18d7c5cda24fdfb0bc83d4ced9b440 [2019-10-22 11:26:51,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:51,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:51,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:51,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:51,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:51,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc78517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51, skipping insertion in model container [2019-10-22 11:26:51,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,199 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:51,215 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:51,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:51,456 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:51,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:51,491 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:51,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51 WrapperNode [2019-10-22 11:26:51,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:51,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:51,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:51,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:51,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:51,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:51,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:51,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:51,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:51,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:51,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:51,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/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 [2019-10-22 11:26:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:51,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:51,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:51,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:51,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:26:51,893 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:51,893 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 11:26:51,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51 BoogieIcfgContainer [2019-10-22 11:26:51,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:51,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:51,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:51,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:51,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:51" (1/3) ... [2019-10-22 11:26:51,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6df72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:51, skipping insertion in model container [2019-10-22 11:26:51,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (2/3) ... [2019-10-22 11:26:51,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6df72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:51, skipping insertion in model container [2019-10-22 11:26:51,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51" (3/3) ... [2019-10-22 11:26:51,902 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-2.c [2019-10-22 11:26:51,910 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:51,917 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:51,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:51,949 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:51,949 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:51,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:51,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:51,950 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:51,950 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:51,950 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:51,950 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-22 11:26:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:26:51,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:51,969 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:51,971 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:51,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:51,976 INFO L82 PathProgramCache]: Analyzing trace with hash 167538580, now seen corresponding path program 1 times [2019-10-22 11:26:51,985 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:51,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251640934] [2019-10-22 11:26:51,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:51,985 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:51,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:52,196 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:52,197 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:52,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:52 BoogieIcfgContainer [2019-10-22 11:26:52,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:52,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:52,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:52,229 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:52,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51" (3/4) ... [2019-10-22 11:26:52,231 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:52,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b82e277c-bcbb-47f3-9b3c-ac947e6a94ab/bin/utaipan/witness.graphml [2019-10-22 11:26:52,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:52,282 INFO L168 Benchmark]: Toolchain (without parser) took 1098.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:52,283 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:52,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.19 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. [2019-10-22 11:26:52,284 INFO L168 Benchmark]: Boogie Preprocessor took 41.67 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,285 INFO L168 Benchmark]: RCFGBuilder took 319.42 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,285 INFO L168 Benchmark]: TraceAbstraction took 332.57 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,286 INFO L168 Benchmark]: Witness Printer took 51.83 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,289 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.19 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. * Boogie Preprocessor took 41.67 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 319.42 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 332.57 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 51.83 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={2:0}, d2={1:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] COND TRUE pd1 != 0 && pd1 == pd2 [L27] EXPR s1->a [L27] EXPR s2->b [L27] return s1->a == s2->b; [L35] COND TRUE !check(pd1, pd2) [L42] __VERIFIER_error() VAL [d1={2:0}, d2={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 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 DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...