./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/signextension-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-regression/signextension-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE --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 98a78a067e915468866815d322f21e8dc3b4fc5df6fdcae5caef72989f625d40 ................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-24 11:06:40,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:06:40,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:06:40,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:06:40,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:06:40,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:06:40,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:06:40,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:06:40,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:06:40,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:06:40,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:06:40,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:06:40,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:06:40,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:06:40,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:06:40,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:06:40,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:06:40,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:06:40,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:06:40,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:06:40,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:06:40,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:06:40,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:06:40,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:06:40,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:06:40,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:06:40,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:06:40,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:06:40,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:06:40,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:06:40,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:06:40,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:06:40,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:06:40,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:06:40,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:06:40,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:06:40,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:06:40,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:06:40,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:06:40,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:06:40,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:06:40,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:06:40,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:06:40,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:06:40,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:06:40,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:06:40,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:06:40,436 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:06:40,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:06:40,443 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:06:40,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:06:40,444 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:06:40,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:06:40,445 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:06:40,446 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:06:40,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:06:40,446 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:06:40,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:06:40,447 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:06:40,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:06:40,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:06:40,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:06:40,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:06:40,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:06:40,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:06:40,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:06:40,449 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:06:40,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:06:40,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:06:40,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:06:40,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:06:40,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:06:40,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:40,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:06:40,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:06:40,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:06:40,453 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:06:40,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:06:40,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:06:40,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:06:40,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:06:40,455 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_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98a78a067e915468866815d322f21e8dc3b4fc5df6fdcae5caef72989f625d40 [2021-10-24 11:06:40,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:06:40,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:06:40,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:06:40,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:06:40,757 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:06:40,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-10-24 11:06:40,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/data/8f5b64f05/c99af04299d545ae965e6a8df458e723/FLAGbd7c180cf [2021-10-24 11:06:41,258 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:06:41,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-10-24 11:06:41,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/data/8f5b64f05/c99af04299d545ae965e6a8df458e723/FLAGbd7c180cf [2021-10-24 11:06:41,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/data/8f5b64f05/c99af04299d545ae965e6a8df458e723 [2021-10-24 11:06:41,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:06:41,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:06:41,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:41,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:06:41,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:06:41,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478665b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41, skipping insertion in model container [2021-10-24 11:06:41,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:06:41,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:06:41,507 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_b7669c2b-a815-4723-91ef-771d78ac01fa/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-10-24 11:06:41,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:41,527 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:06:41,550 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_b7669c2b-a815-4723-91ef-771d78ac01fa/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-10-24 11:06:41,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:06:41,568 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:06:41,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41 WrapperNode [2021-10-24 11:06:41,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:06:41,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:41,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:06:41,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:06:41,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:06:41,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:06:41,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:06:41,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:06:41,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:06:41,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:06:41,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:06:41,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:06:41,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (1/1) ... [2021-10-24 11:06:41,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:06:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:06:41,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:06:41,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:06:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:06:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:06:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:06:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:06:41,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:06:41,935 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 11:06:41,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:41 BoogieIcfgContainer [2021-10-24 11:06:41,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:06:41,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:06:41,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:06:41,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:06:41,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:06:41" (1/3) ... [2021-10-24 11:06:41,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52b416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:41, skipping insertion in model container [2021-10-24 11:06:41,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:06:41" (2/3) ... [2021-10-24 11:06:41,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a52b416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:06:41, skipping insertion in model container [2021-10-24 11:06:41,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:41" (3/3) ... [2021-10-24 11:06:41,947 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-1.c [2021-10-24 11:06:41,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:06:41,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:06:42,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:06:42,008 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, mAutomataTypeConcurrency=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 [2021-10-24 11:06:42,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:06:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-24 11:06:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 11:06:42,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:06:42,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 11:06:42,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:06:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:06:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash 43409, now seen corresponding path program 1 times [2021-10-24 11:06:42,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:06:42,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082124821] [2021-10-24 11:06:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:06:42,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:06:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:06:42,167 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:06:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:06:42,213 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:06:42,215 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:06:42,217 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:06:42,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:06:42,225 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:06:42,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:06:42 BoogieIcfgContainer [2021-10-24 11:06:42,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:06:42,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:06:42,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:06:42,243 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:06:42,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:06:41" (3/4) ... [2021-10-24 11:06:42,245 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:06:42,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:06:42,279 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:06:42,281 INFO L168 Benchmark]: Toolchain (without parser) took 998.94 ms. Allocated memory is still 96.5 MB. Free memory was 55.0 MB in the beginning and 44.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:06:42,282 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:06:42,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.44 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 72.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:06:42,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:06:42,284 INFO L168 Benchmark]: Boogie Preprocessor took 32.42 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.6 MB in the end (delta: 777.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:06:42,285 INFO L168 Benchmark]: RCFGBuilder took 293.25 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 59.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:06:42,285 INFO L168 Benchmark]: TraceAbstraction took 301.46 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 45.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:06:42,286 INFO L168 Benchmark]: Witness Printer took 36.86 ms. Allocated memory is still 96.5 MB. Free memory was 45.8 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:06:42,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.44 ms. Allocated memory is still 96.5 MB. Free memory was 54.8 MB in the beginning and 72.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.42 ms. Allocated memory is still 96.5 MB. Free memory was 70.4 MB in the beginning and 69.6 MB in the end (delta: 777.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 293.25 ms. Allocated memory is still 96.5 MB. Free memory was 69.6 MB in the beginning and 59.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 301.46 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 45.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.86 ms. Allocated memory is still 96.5 MB. Free memory was 45.8 MB in the beginning and 44.2 MB in the end (delta: 1.5 MB). There was no memory consumed. 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: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] unsigned short int allbits = -1; [L8] short int signedallbits = allbits; [L9] int unsignedtosigned = allbits; [L10] unsigned int unsignedtounsigned = allbits; [L11] int signedtosigned = signedallbits; [L12] unsigned int signedtounsigned = signedallbits; [L21-L22] COND TRUE unsignedtosigned == 65535 && unsignedtounsigned == 65535 && signedtosigned == -1 && signedtounsigned == 4294967295 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 224.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: 5.7ms SsaConstructionTime, 51.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2021-10-24 11:06:42,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7669c2b-a815-4723-91ef-771d78ac01fa/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...