./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test21-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8 --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 0.2.1-dev-4e77c04 [2021-10-13 07:36:05,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:36:05,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:36:05,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:36:05,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:36:05,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:36:05,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:36:05,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:36:05,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:36:05,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:36:05,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:36:05,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:36:05,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:36:05,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:36:05,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:36:05,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:36:05,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:36:05,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:36:05,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:36:05,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:36:05,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:36:05,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:36:05,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:36:05,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:36:05,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:36:05,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:36:05,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:36:05,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:36:05,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:36:05,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:36:05,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:36:05,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:36:05,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:36:05,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:36:05,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:36:05,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:36:05,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:36:05,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:36:05,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:36:05,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:36:05,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:36:05,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:36:06,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:36:06,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:36:06,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:36:06,019 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:36:06,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:36:06,020 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:36:06,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:36:06,020 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:36:06,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:36:06,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:36:06,022 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:36:06,022 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:36:06,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:36:06,023 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:36:06,023 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:36:06,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:36:06,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:36:06,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:36:06,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:36:06,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:36:06,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:36:06,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:36:06,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:36:06,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:36:06,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:36:06,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:36:06,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:36:06,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:36:06,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:36:06,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:36:06,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:06,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:36:06,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:36:06,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:36:06,028 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:36:06,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:36:06,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:36:06,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:36:06,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:36:06,029 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_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 [2021-10-13 07:36:06,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:36:06,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:36:06,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:36:06,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:36:06,364 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:36:06,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/test21-2.c [2021-10-13 07:36:06,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/data/f71dbabbb/b1e518575f5a44df98ecb0061a1db22e/FLAGe699ee671 [2021-10-13 07:36:06,888 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:36:06,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/sv-benchmarks/c/ldv-regression/test21-2.c [2021-10-13 07:36:06,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/data/f71dbabbb/b1e518575f5a44df98ecb0061a1db22e/FLAGe699ee671 [2021-10-13 07:36:07,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/data/f71dbabbb/b1e518575f5a44df98ecb0061a1db22e [2021-10-13 07:36:07,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:36:07,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:36:07,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:07,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:36:07,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:36:07,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1390d62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07, skipping insertion in model container [2021-10-13 07:36:07,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:36:07,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:36:07,496 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2021-10-13 07:36:07,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:07,510 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:36:07,527 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2021-10-13 07:36:07,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:36:07,543 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:36:07,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07 WrapperNode [2021-10-13 07:36:07,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:36:07,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:07,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:36:07,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:36:07,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:36:07,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:36:07,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:36:07,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:36:07,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:36:07,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:36:07,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:36:07,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:36:07,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (1/1) ... [2021-10-13 07:36:07,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:36:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:07,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:36:07,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:36:07,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:36:07,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:36:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:36:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:36:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:36:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:36:08,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:36:08,197 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 07:36:08,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:08 BoogieIcfgContainer [2021-10-13 07:36:08,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:36:08,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:36:08,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:36:08,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:36:08,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:07" (1/3) ... [2021-10-13 07:36:08,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453fd279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:08, skipping insertion in model container [2021-10-13 07:36:08,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:07" (2/3) ... [2021-10-13 07:36:08,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453fd279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:08, skipping insertion in model container [2021-10-13 07:36:08,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:08" (3/3) ... [2021-10-13 07:36:08,208 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2021-10-13 07:36:08,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:36:08,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:36:08,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:36:08,280 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:36:08,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:36:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:36:08,299 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:08,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:36:08,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:36:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2576448, now seen corresponding path program 1 times [2021-10-13 07:36:08,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:36:08,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786299628] [2021-10-13 07:36:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:08,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:36:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:36:08,465 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:36:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:36:08,543 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:36:08,545 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:36:08,546 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:36:08,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:36:08,556 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:36:08,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:36:08 BoogieIcfgContainer [2021-10-13 07:36:08,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:36:08,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:36:08,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:36:08,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:36:08,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:08" (3/4) ... [2021-10-13 07:36:08,584 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:36:08,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:36:08,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:36:08,626 INFO L168 Benchmark]: Toolchain (without parser) took 1341.57 ms. Allocated memory is still 130.0 MB. Free memory was 91.9 MB in the beginning and 63.2 MB in the end (delta: 28.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,626 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 130.0 MB. Free memory is still 108.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:36:08,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.00 ms. Allocated memory is still 130.0 MB. Free memory was 91.6 MB in the beginning and 103.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.96 ms. Allocated memory is still 130.0 MB. Free memory was 103.7 MB in the beginning and 102.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:36:08,628 INFO L168 Benchmark]: Boogie Preprocessor took 23.92 ms. Allocated memory is still 130.0 MB. Free memory was 102.2 MB in the beginning and 101.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,629 INFO L168 Benchmark]: RCFGBuilder took 592.92 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 82.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,630 INFO L168 Benchmark]: TraceAbstraction took 379.24 ms. Allocated memory is still 130.0 MB. Free memory was 82.7 MB in the beginning and 64.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,630 INFO L168 Benchmark]: Witness Printer took 42.48 ms. Allocated memory is still 130.0 MB. Free memory was 64.8 MB in the beginning and 63.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:36:08,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 130.0 MB. Free memory is still 108.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.00 ms. Allocated memory is still 130.0 MB. Free memory was 91.6 MB in the beginning and 103.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.96 ms. Allocated memory is still 130.0 MB. Free memory was 103.7 MB in the beginning and 102.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.92 ms. Allocated memory is still 130.0 MB. Free memory was 102.2 MB in the beginning and 101.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.92 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 82.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 379.24 ms. Allocated memory is still 130.0 MB. Free memory was 82.7 MB in the beginning and 64.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 42.48 ms. Allocated memory is still 130.0 MB. Free memory was 64.8 MB in the beginning and 63.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 44]: a call to reach_error is reachable a call to reach_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) [L44] 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. OverallTime: 283.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.2ms SsaConstructionTime, 83.0ms SatisfiabilityAnalysisTime, 0.0ms 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! [2021-10-13 07:36:08,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3410bc17-e113-4361-aea5-282d69bc8496/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...