./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 ............................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-28 07:28:11,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:11,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:11,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:11,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:11,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:11,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:11,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:11,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:11,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:11,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:11,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:11,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:11,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:11,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:11,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:11,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:11,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:11,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:11,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:11,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:11,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:11,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:11,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:11,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:11,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:11,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:11,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:11,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:11,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:11,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:11,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:11,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:11,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:11,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:11,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:11,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:11,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:11,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:11,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:11,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:11,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:11,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:11,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:11,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:11,278 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:11,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:11,279 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:11,279 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:11,279 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:11,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:11,279 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:11,280 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:11,280 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:11,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:11,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:11,280 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:11,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:11,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:11,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:11,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:11,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:11,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:11,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:11,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:11,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:11,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:11,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:11,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:11,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:11,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:11,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:11,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:11,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:11,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:11,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:11,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:11,288 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:11,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:11,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:11,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:11,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:11,290 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 [2020-11-28 07:28:11,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:11,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:11,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:11,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:11,622 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:11,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test21-2.c [2020-11-28 07:28:11,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/data/bba0b1e51/5445881840a44db09f082859ef46bfa0/FLAG4ba7a7666 [2020-11-28 07:28:12,217 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:12,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/sv-benchmarks/c/ldv-regression/test21-2.c [2020-11-28 07:28:12,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/data/bba0b1e51/5445881840a44db09f082859ef46bfa0/FLAG4ba7a7666 [2020-11-28 07:28:12,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/data/bba0b1e51/5445881840a44db09f082859ef46bfa0 [2020-11-28 07:28:12,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:12,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:12,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:12,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:12,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:12,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5123e6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12, skipping insertion in model container [2020-11-28 07:28:12,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:12,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:12,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:12,857 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:12,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:12,892 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:12,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12 WrapperNode [2020-11-28 07:28:12,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:12,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:12,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:12,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:12,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:12,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:12,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:12,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:12,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... [2020-11-28 07:28:12,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:12,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:12,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:12,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:12,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/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 [2020-11-28 07:28:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:28:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:13,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:28:13,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:13,862 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:28:13,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:13 BoogieIcfgContainer [2020-11-28 07:28:13,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:13,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:13,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:13,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:13,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:12" (1/3) ... [2020-11-28 07:28:13,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b267e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:13, skipping insertion in model container [2020-11-28 07:28:13,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:12" (2/3) ... [2020-11-28 07:28:13,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b267e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:13, skipping insertion in model container [2020-11-28 07:28:13,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:13" (3/3) ... [2020-11-28 07:28:13,876 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-11-28 07:28:13,886 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:13,891 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:13,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:13,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:13,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:13,943 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:13,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:13,944 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:13,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:13,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:13,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2020-11-28 07:28:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:28:13,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:13,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:28:13,972 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2668704, now seen corresponding path program 1 times [2020-11-28 07:28:13,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:13,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945528622] [2020-11-28 07:28:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:14,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:14,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:14,370 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:28:14,371 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:28:14,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:28:14,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:14 BoogieIcfgContainer [2020-11-28 07:28:14,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:14,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:14,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:14,416 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:14,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:13" (3/4) ... [2020-11-28 07:28:14,420 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:28:14,470 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7df4caf4-14a2-4b3a-9475-be4f32dce1c5/bin/utaipan/witness.graphml [2020-11-28 07:28:14,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:14,473 INFO L168 Benchmark]: Toolchain (without parser) took 1875.03 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.7 MB in the beginning and 94.6 MB in the end (delta: -30.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:14,473 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:14,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.12 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 76.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:14,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:14,476 INFO L168 Benchmark]: Boogie Preprocessor took 32.22 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:14,477 INFO L168 Benchmark]: RCFGBuilder took 894.73 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 44.6 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:14,478 INFO L168 Benchmark]: TraceAbstraction took 545.08 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 44.1 MB in the beginning and 96.7 MB in the end (delta: -52.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:14,479 INFO L168 Benchmark]: Witness Printer took 55.05 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 94.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:14,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 100.7 MB. Free memory is still 79.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.12 ms. Allocated memory is still 100.7 MB. Free memory was 63.5 MB in the beginning and 76.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.22 ms. Allocated memory is still 100.7 MB. Free memory was 74.8 MB in the beginning and 73.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 894.73 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 44.6 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 545.08 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 44.1 MB in the beginning and 96.7 MB in the end (delta: -52.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.05 ms. Allocated memory is still 125.8 MB. Free memory was 96.7 MB in the beginning and 94.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] struct dummy d1, d2; [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] COND TRUE !check(pd1, pd2) [L3] __assert_fail("0", "test21-2.c", 3, "reach_error") VAL [d1={9:0}, d2={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...